manufactured success part 1

to be drafted
I. Intro

“Sisters, Thomas, we call them sisters.”

It is the first time that father John brought his son Thomas to his work at the Institute. They are standing at the window of his office, where they can see two girls exiting a car and being escorted inside. Thomas is rather confused about their nun-like outfit.

“What about them?”

“They have just graduated from our school and now continue their journey here.”

“Sounds kinda dull to me. My graduation consisted of partying with my peers, whereas their graduation is coming to your workplace? I almost feel bad for them. What kind of school did they go to? You never struck me as a teacher.”

“I don’t teach at their school. They live in a sort of ‘boarding school’ until they come of age. It is then that they become my responsibility. I don’t even follow their curriculum. Sister Martha, what classes did they do recently?

Sister Martha had been quietly standing to the side with sister Lottie, and needs to clear her throat.

“Mostly religion, father John. In the last year they also had sports, language courses, and dance class”.

Thomas: “Religion? What do you have to do with religion.”

John: “You have to be more open minded, Thomas. Religion can have its purposes. Their courses are designed to avoid critical thinking. Instead, they are told to follow orders and to believe in some plan that is bigger than them. We can control them well by keeping them uneducated and by indoctrinating them with a religion that has been designed to make them docile.”

“And what does this religion tell them to do?”

“In essence, it tells them not to question authorities, to not have impure thoughts, and instead to pray as much as they can and look forward to the rite of passage.”

“Rite of passage?”

“That is what you are about to see today. Sister Martha, what are the names of our candidates?”

“Sister Ember and Sister Mary. They both recently turned 18 and will be here soon.”

“Thomas, sit down and let me do the talking. These two girls are about to see a man for the first time. I will have to guide them. Sister Martha, let them in. Sister Lottie, prepare the ribbons.”

Sister Martha opens the door and ceremonially announces “Sister Ember and sister Mary, father John has given you permission to see him”.

The girls enter with humble posture and praying hands. They try to appear dignified and ceremonial, but the nervousness clearly shows. They stop in the middle of the room and look up. When they see father John and Thomas they stand in awe and stare too long until they remember to lower their heads.

Father John: “Sister Ember and Mary, why have you appeared in front of me?”. The sisters kneel on the floor and recite a long prayer that they had learned by heart about devotion and proving once worth. The girls were made to believe that the prayer serves the purpose of appeasing the father and a higher power, when it is only supposed to give them the illusion of a ceremony more important than themselves. Father John heard it too many times to pay attention.

“Well done, both of you” praises Father John. The girls react with a pride and happiness that puzzles Thomas.

Father John: “Sister Ember, we start with you, get up.” She gleefully gets up and dusts off her knees. “Take off all your clothes”.

Sister Ember looks confused. Did he say to remove all of her clothes? She takes a short glance at Sister Martha and Lottie, hoping for some clarification, but they have a neutral expression on their faces, showing no disagreement with the father.

No one saw her naked before. All the girls were taught to dress meekly, to cover themselves, and to show as little skin as possible. “Sister Ember, remove all your clothes” the father repeats calmly. She relaxes a bit due to the tone of his voice and removes her wimple, allowing her beautiful brown hair to fall down. Determined yet nervously she unbuttons her dress until she stands there in her undergarment. Thomas has to suppress a smirk looking at probably the least sexy underwear he ever saw.

In the complete silence of the room, Sister Ember takes a deep breath, hoping someone would tell her that she could stop. Sister Mary stays on her knees pressing her hands firmly together, having no clue what to do.

Sister Ember let out a calm sigh and removed her undergarment, now standing there naked with a stern but clearly red face.

Father John: “Well done again, now come here and sit on my leg”.

“Yes, father John”.

She nervously walks over while somewhat covering her crotch with her hands and proceeds to sit on his leg. He probes her skin and examines her slowly. “Firm skin, well toned muscles, it seems you did well in school, did she Sister Martha?”

“Yes, she performed quite well.”

Hearing the praise, sister Ember feels so relieved that she almost forgets that she is sitting naked on the leg of the first man she ever saw. She is quickly brought back to reality when father John starts to suck on one of her large perky tits. Father John does not pay attention to her reservations, knowing how this always plays out. Just like all the previous candidates, Sister Ember calms down and enjoys the sensation. All her life, she had mostly refrained from touching her body, because it was strictly forbidden. However, with the highest authority doing it to her, she let herself enjoy it as much as possible. A warm feeling washes over her, wanting for more. She turns her body towards father John, giving him better access to her tits and her hardening nipples. When he runs his hand slowly up her thigh, she subconsciously opens her legs to make sure he does not stop. The father carefully touches her pussy and her body shutters in relief as 18 years of constraints are finally lifted from her. Out of pure instinct, sister Ember grabs the head of father John and firmly kisses him. However, she stops and looks confused, as she had never learned what a kiss was.

Sister Mary was still kneeling on the floor, her hands barely in the praying position and with her mouth wide open. She wants to condemn sister Ember for breaking the rules they grew up with, but instead grows jealous, yearning for the attention and rewards sister Ember receives.

After a while, father John pulls her away and opens his pants, revealing his massive 36 cm (14.2 inch) cock. Sister Ember is mesmerized. Her first reaction is aversion to such a foreign body part, but then her body feels an inexplicable desire to touch it, have it, not even knowing how. Without realizing it, she has already started to play with her pussy.

Father John knows all too well. “Not yet, I want you to put it in your mouth first”. Sister Ember slowly slides off his leg and kneels between his thighs, marveling at what has just become the center of her world. She carefully licks the shaft, getting a feeling for its texture. Slowly making her way to the top, she popped the giant head into her mouth.

Father John: “Keep working, sister Ember, and you will be rewarded.” After seeing that the girl is performing her duty properly, he looks up and locks eyes with sister Mary. It takes her a second to realize his gaze and immediately resumes her praying posture. “Sister Mary, you now also remove your clothes and service father Thomas.” He points to his son.

With a shocked face, she looks at Thomas, who does not meet her eyes yet, as he still looks at his father with raised eyebrows. Father John does not say anything, but only nods at him with a sterner expression than he had shown to the sisters. Thomas composes himself and calmly nods back.

Sister Mary undresses herself a lot faster than her sister and proceeds to sit on Thomas’ lap in order to offer her breasts and kiss him. Soon after, both men sit in their large armchairs receiving naive but passionate blowjobs.

After a while father John proclaims “Well done, both of you. You have my permission to climb up and put the cocks in your pussies”. The sisters look confused, as they never heard these terms. But after some thinking, sister Ember’s face becomes more determined and she climbs up, knowing exactly what she was told to do.

She squats over father John, grabs his cock by the head and presses it against her tiny pussy. Sister Mary quickly follows suit and climbs up on Thomas.

Despite their pussies being soaking wet, they struggle to even insert the tip of those massive cocks. For some time, they both groan and breathe heavily, desperately rubbing the cocks against their slits, hoping to feed their yearning holes.

“Are you going to fail your rite of passage?” Father John asked. Gasping for air, sister Ember looks into his disappointed face and feels like a failure. But she is no failure. Reaching down, she spreads her lips and pushes while groaning with a desperation she never felt before.

She adjusts herself, sitting upright and putting her entire weight on his cock until her pussy gives up and allows the head to pop in. Surprised by the sensation, she is unable to find leverage. With her eyes and mouth wide open, she cannot stop the dick from sliding all the way in until it hits her cervix. Despite going so deep, she only manages to take not even half of it.

She looks down, trying to process what she did to her pussy. But soon after, the shock subsides and desire builds up. The initial feelings of pain give way to a feeling of pleasure she didn’t know was possible. She starts grinding up and down, following her body’s commands in elevating what she is feeling. She lifts her head with her eyes rolling up.

Sister Mary has not been successful and starts quietly sobbing in the face of defeat. With an annoyed undertone, father John instructs Thomas to help her, whereupon he grabs her hips and his cock and uses a strength sister Mary is unfamiliar with to push against her pussy. The pressure causes her to groan just like sister Ember did before, but gradually gets louder while Thomas’ cock demands entrance. Her screaming is abruptly stopped, when it suddenly pops in. Her body freezes up with her brain trying to process what is happening. But then her body takes over control, chasing the pleasure that sister Ember is also working for.

She initially slammed her hip up and down, trying to enjoy the cock of father John, but has to control her movement after getting hit in the cervix too hard. She also cannot fit even half of the 36 cm (14.2 inch) shaft inside.

Inexperienced with the sensation she is feeling, sister Ember keeps thanking father John and pleads for the ride to continue, who gives her more instructions.

“It appears that this is what the Lord has made you for. But this ride will have to find an end. I want you to finish, to climax, to come.”

“What do you mean? What do you want me to do, father John?”

He grabs her ass with one hand and one of her tits with the other and holds her in the air, while thrusting his massive cock in her pussy. Sister Ember’s body is responding and tenses up. Initially, she pleads for father John not to stop, but her pleas eventually go silent as she loses control. Her eyes are rolling back and her body explodes in pleasure. She succumbs to a feeling she never experienced before and her legs are shaking, unable to support her anymore. Father John catches her and embraces sister Ember who slowly calms down and cuddles up against him while she feels like she is in heaven.

With an indifference towards the girl in his arms, father John looks at sister Mary and tells Thomas to finish her. She feels initially thankful when he grabs her ass, but starts to panic, when his other hand grabs her tightly by the throat. When he stats fucking her pussy, she tries to focus on the deep thrusts trying to accomplish what sister Ember just did. She grabs the arm that slowly suffocates her but realizes by the intensity of his grip that she cannot compete with the strength of a man.

He eventually releases his grip just enough for her to get enough air to breath. This allows her to stop fighting and to give in to his power, which strangely gives her the peace in which she is able to enjoy getting fucked. It starts to build up more and more, the feeling intensifying, until the only thing in the world that seems to matter is her pussy getting drilled into oblivion. For a moment, the world stands still and suddenly her body erupts furiously into her first orgasm. Her legs give in, but before she could sink in Thomas’ arms, she hangs for a few seconds by her throat. But it did not matter to her, as she experiences a profound feeling of thanks for Thomas and the pleasure he has given her.

Father John gives them some time to catch their breath and to come back to their senses.

“Sister Ember and sister Mary, what you both just had is called ‘sex’. The lord can be praised through the pleasure of prayer and through the pleasure of sex. Having experienced both, you now have to decide how to devote yourself to the lord. You can either choose prayer, in which case, you will live your life in a monastery in deep prayer, or stay in the institute and have sex with any man that is provided for you. Every woman has different preferences that I do not know. So, I cannot choose for you. Instead, I ask you to look into your hearts and to state which path you choose to praise the lord.”

Sister Mary is catching her breath with her body still in shock from the abuse by the hands of Thomas. Prayer had been boring, but at least she was not at the whim of a man. She is wondering whether the new found pleasure was worth the risk that men may pose. Tonight, she will consult with sister Ember about this difficult choice. She was always so smart and a great source for advice. But how can she give her a signal?

“Oh father John, let me praise the lord with the pleasure of sex.” Sister Ember is sitting with a smile in the lap of father John, twirling her hair and rubbing her clit. She tasted heaven and already yearns for more. Sister Mary is stumped. What should she do? Sister Ember’s response came with such determination. How did she come to her conclusion so quickly? Did she know more than her? Would she be missing out? Is she too much of a coward again? She does not want to be alone with her decision. She does not want to miss out. The orgasm she had certainly felt more pleasurable than prayer. Was praying even a pleasure? It was boring when she was still young and still seems boring now. And she is all grown up now. She is ready to face the world.

“Me too”, sister Mary says quietly. “Me too, what? Speak with certainty” presses father John.

She clears her throat: “I also chose the pleasure of sex, father John”. As these words leave her mouth, she almost wants to take it back.

Father John proclaims: “Very well, I acknowledge your decisions, sister Ember and sister Mary. You have set your paths and it is now my duty to help you on your journey.”

Sister Ember and sister Mary start to smile, feeling pride in being asked about their opinions and taking matters in their own hands. Thomas is baffled about the girls being dumb enough to be tricked into sexual servitude. Father John used to feel insulted partaking in the illusion of sister’s having control over their life, but has learned to be indifferent about it. However, out of the corner of his eye only he noticed a hint of disappointment on the face of sister Martha and sister Lottie. They had faint hopes that a sister would choose prayer instead. Seeing their hope crushed almost was a larger pleasure for father John than fucking the new sisters.

“Then let us finish the rite of passage. When we praise the lord with the pleasure of sex, the lord often rewards us with a climax. Unfortunately, women are selfish creatures and do not provide anything for others when they come. Men, on the other hand, are giving beings who provide cum for women, who can cherish the gift. Now suck the cum out of our cocks and finalize your rite of passage.”

The sister’s climb down to the floor, kneel in front of the men and start sucking on the respective cocks. Their enthusiasm barely made up for their lack of experience. While Thomas wants to lash out, father John gives instructions about how to suck. Father John does not have much respect for the sisters, but he still acknowledges that he should not fault someone for knowledge that is not taught yet, no matter how bothersome it is to teach the same things over and over again.

The sisters did improve their technique due to a sheer unwavering willingness to please. Their heads bob enthusiastically up and down, hitting their own back of the throat with the cock in their hands. Ember’s breathing gets heavier, as she increasingly refrains from breathing just to increase the pleasure of father John and sister Mary soon follows suit.

Father John: “You did well, now you may open your mouth and swallow everything I have to offer to you.”

She opens her mouth with a smile with her hands in her lap eagerly waiting for her rewards. He grabs her head and tilts it slightly back while stroking his cock. Sister Ember notices the grip on her head tightening, indicating to her that father John is about to cum. Her smile disappears in shock when she notices huge ropes of cum shooting into her mouth. She understands why she had to tilt back her head as her mouth kept filling up. Scared to do anything wrong, she stays frozen while father John’s climax subsides. With a bit over half an ounce (20 ml) of cum in her mouth she gives a questioning look to father John.

Father John: “Let’s wait with swallowing until sister Mary gets her mouthful. We will finish the rite of passage simultaneously. Keep your mouth open”.

Obediently, sister Ember sits on her knees with a huge load of cum in her open mouth. When she looks over, she sees Thomas standing up, holding sister Mary’s face between his hands thrusting his cock in her face. Her hands are slightly pushing against his thighs trying to get away from the abuse, but her own submissiveness does not allow it. Seeing tears rolling from her red eyes pushes Thomas over the edge and sister Mary is rewarded with her mouthful of cum.

Father John: “Well done, both of you. Now each of you close your mouth but do not swallow yet. Stand up. Sister Lottie, bring me the ribbons.”

The sisters start to dislike the cum in their mouth and would have rather swallowed it by now. Sister Lottie gives father John and Thomas each a white ribbon, who subsequently attach the white ribbons around the neck of the sisters.

Father John: “Sister Ember and sister Mary. You have come before me to pass the rite of passage and to *********** your path to praise the lord. I accept your wish for the pleasure of sex. Your pussies were fucked and you received your first cum. You have reached level one of sisterhood and receive the level one ribbon. By having more sex and honing your skills you may ascend to higher levels. A higher level sister praises the lord through training, discipline and pleasure. I ask of you to be diligent and strife for the best versions of yourself. Have you understood?”

The sisters quickly nod their heads, clearly bothered by the cum in their mouth. Father John does not intend to torture them longer.

“You may swallow now.”

They close their eyes and gulp the entire load down in one go. The sisters are not used to the taste and would probably not like it if they were not so proud of their achievement. Sister Ember looks with a smile to sister Mary. Her initially uneasy expression also changes to a smile, giving her the feeling of an achievement worth celebrating.

Father John: “Ok, let’s go, sister Martha, lead us to sister Ember’s new chamber”. Sister Ember and sister Mary are about to grab their clothes, but Father John stops them. “From now on, you do not need clothes anymore, unless someone requests it. You are free from this concern.”

The sisters reluctantly put down their clothes. Just a few moments ago they barely showed anything but their faces and now they cannot cover themselves up? Neither dares to question the father.

On the way to the chamber, father John explains: “Being a level one sister has benefits. Each of you gets her own room with her own bed and washroom. No more bunk beds and shared facilities. Your day starts at 6 o’clock in the morning. You will clean yourself in the shower, dry your hair and be ready for breakfast at 7 followed by stretching. At 8 o’clock you perform an enema to clean your ass. At 9, you receive masters and have sex with them until 12 o’clock followed by half an hour of lunch and subsequent stretching. From 1:30 to 6 o’clock you have more sex with masters followed by one hour of physical training. At 7 o’clock you have dinner and at 10 o’clock it is time to sleep.”

Sister Mary: “What are masters?”

Father John: “They support the institute, which allows us to provide food and shelter for everyone. In return, the masters decide what sex to have and what to do with you. Your obligation is to serve them. Any insufficient service on your part falls back to me, so I trust you will always do your duty as asked of you.”

A stern look of father John caused them to immediately reply with a “Yes, father John”.

When they arrive at sister Ember’s new chamber, they are shown around. The room has a display that shows the current time and works as an alarm clock.

“Let me explain physical training. At 6 o’clock in the evening, a display on the wall will instruct you to perform a well designed program to train your muscles and stretch your body. You are expected to have well toned thighs, a slender figure, and a flexible body. It is a continuation of the physical exercise you had in school, but with increasing intensity. I have been told, you were diligent. Show me how flexible you are. Lay on your stomach and roll your legs over your head until your ass sits on your head. You may know it as a chest stand”

Both sisters performed the pose with ease and a smile on their face.

“Sister Ember, now lay on your back and pull your legs behind your head. Sister Mary, you stay in the backend pose for now”.

While Sister Ember gets into her pose, father John walks to a dresser and fetches a bottle of lube and two white boxes each containing four differently sized rubber objects.

Father John: “Now, I will explain further stretching. This bottle contains lube, which reduces friction. These rubber objects are butt plugs, which you insert into your ass.” The girls look shocked and want to get up, but father John signals them to not get up.

“Sister Ember, this is the smallest butt plug. It has a circumference of 8 cm (3.1 inch) and a length of 5cm (2 inch).”

Father John applies some lube, holds sister Ember’s legs behind her head with his left hand and places the buttplug with his right hand on her puckered asshole. She jumps a little from the coldness and utters a faint “father John…”, but eases up, gradually understanding that she has no say in this.

Sister Mary is in her pose, watching from afar as father John pushes the butt plug against her sphincter.

“I suggest you relax now, because my arm is stronger than your ass.” “I’m trying, just give me a moment, father John”. She breathes out slowly and the tenseness of her body subsides. Sister Mary sees how the asshole of her friend opens up and swallows up the butt plug.

“Sister Mary, put your legs also behind your head”. Father John picks up another butt plug with the same size but from the other box.

“I don’t think I can, father John, I have never…” Sister Mary stops talking when she sees no faltering in his eyes. After a second of bargaining with herself, she switches pose and stammers “I am sorry, my ass is ready for you, father John”. Soon after, the butt plug is logged firmly in her ass.

Father John: “The point of the stretching is to loosen up your assholes, so they can receive larger and bigger objects. Therefore, you have to progress to larger sizes.”

He walks to the first box and picks up a larger toy.

“This toy has a circumference of 10 cm (3.9 in)and a length of 10 cm (4 inches). Let’s see how deep you can go sister Ember”.

Sister Ember looks visibly nervous, but stays bravely in her pose. Father John hands her the lube and the new buttplug.

“Lube it up”.

While sister Ember lubes up the toy, father John removes the first one from her ass. He guides her hand with the toy to her ass and tells her to insert it herself.

Sister Ember’s breathing increases while she starts pushing the foreign object against her anus. Starting to get embarrassed about her lack of success she gets nervous and pushes harder, but is only rewarded with pain and no success. Father John encourages her “You still need to learn about your body, try different angles.” His advice proves correct and soon after, the butt plug pops in and slowly enters deeper into her bowls. She looks unsure while it travels inside and is afraid of all the pressure, but shortly after she is surprised to find out that a part of herself is enjoying the fullness and is eager to insert more. Without much problem she inserts the rest and she lets out a groan when her ass closes around its shaft.

Sister Mary is struggling a lot more with the second butt plug. While she manages to insert the tip, her ass is struggling a lot with opening up enough to the size of butt plug. She tries to relax and breathe, but her ass is not cooperating.

“I’m sorry, I am trying, but I can’t get it in. It is too big, father John”.

Father John sighs and turns to sister Mary. “Get up and help her.” Sister Ember reaches for her own butt plug attempting to pull it out before getting up, but is stopped by him

“No, keep it in. You will have to wear it a lot if you want to see stretching results.”

She gets up awkwardly, checks her toy and waddles over to sister Mary. When she pushes the butt plug, she notices a strong resistance from her butt.

Sister Mary looks at her with a defeated look asking for help. Sister Ember tries to encourage her “Don’t fight it. You are clenching your ass and the toy won’t go any further. I find that it helps if you push out a little, like… you know … going to the bathroom.”

Visibly confused about what seemed a contradiction, sister Mary hesitates. But with no other option left, she instructs her body to push out the toy. To her surprise, her anus relaxes and widens. Sister Ember jumps at the opportunity and pushes the butt plug another inch. But the sudden shift tenses up sister Mary and progress stops. Sister Ember looks at father John while shrugging her shoulders, hoping that they can stop.

Father John: “Lick sister Mary’s pussy and push the toy in her ass.”

Sister Ember looks at him for a while, unsure whether she understood him correctly. But a nod of his removes her doubts. She slowly hunches over and moves her face over sister Mary’s pussy.

“Sister Ember, I …” sister Mary’s stammering is interrupted by a tongue softly touching her clit. A warm sensation showers over her body and her entire body relaxes.

“Oh lord, sister Ember, that feels amazing”. Sister Ember keeps caressing her slit with soft and broad strokes. If her body was not locked up in a pose, she would have started to move and grind her body against sister Ember.

While sister Mary is lost in pleasure, sister Ember grabs the plug and shoves it fully inside sister Mary’s ass, who immediately jumps out of her pose and rolls on her stomach, grabbing her ass.

“Ahhhh, that was too deep. That was so inconsiderate!”

Thomas is bewildered by her choice of words, but has to laugh when he understands that the sisters do not know how to curse.

Father John: “Good job, sister Ember. I was worried that sister Mary would disappoint us today.”

Sister Mary feels defeated, realizing that getting the toy jammed up her ass would get her no pity whereas sister Ember got all the praise. She swallows her pride and focuses on enduring the pain. To her relief, the pain quickly subsided as most of the discomfort had been the sudden shock. She glanced over to father John, hoping for validation, but he had already turned to the first box and gotten a third butt plug that was even larger.

“Sister Ember, can you surpass her and handle this one? It has a circumference of 12 cm (4.7 inches) and a length of 13cm (5.1 inches). That would be a rare achievement this early into stretching.”

Sister Ember feels too confident to decline the challenge. “Anything for you, Father John”.

“Sister Mary, give her a hand and take the butt plug out of her ass. Sister Ember, bend over”.

Cautious of the toy in her ass, she gets up and slowly moves over to sister Ember. They both now realize that walking clenches their sphincter, logging the toys firmly in their asses. Sister Mary attempts to pull it out but slips off the lubed up toy. As she tries to grip it more firmly between her thumb and fingers, she accidentally pinches sister Ember’s asshole against the toy, causing her to cry out.

Sister Mary does not feel sorry considering what sister Ember had done to her just now. She will just rip out the toy, making her pay. Maybe father John will see that sister Ember is not perfect either. It is her time to get revenge. She reaches for the toy, grabs it, and looks into sister Ember’s eyes. Sister Ember waves the pain away and nods at her with a smile. Maybe it is not sister Ember’s fault. Maybe she has only herself to blame. She sighs and proposes “Sister Ember, lay on your back, I’ll help you.”

Sister Ember lays down and Sister Mary gently licks her slit, calming her down. Oblivious to the pain sister Mary was about to inflict, she relaxes and her body loosens up. Slowly, the toy is pulled out and both sisters look happy. Father John was fully aware of what was about to happen and was angry that sister Mary did not take the bait. But he quickly discards his disappointment, feeling more curious about the challenge of sister Ember.

She is laying on her back with her legs behind her and pushes the lubed up butt plug against her ass. Her sphincter does open up, but only enough to let in part of the toy. Even though she is fully relaxed and has the right angle, the toy won’t move any further despite all the force she is applying. After a few minutes, her arm strength and determination are fading and her forceful grunts turn into a helpless sobbing. Father John starts to get frustrated by the stupidity of her technique.

Father John: “Your arms are too weak, sit on the butt plug.”

Sister Ember tries to not let the insult get to her, places the toy on the floor, and puts her weight on the toy. With the much larger force provided by her body weight, the toy quickly makes it almost entirely in her butt, but the pain causes her to quickly jolt up. “Ahhhh, it is so big. Yikes! I don’t think I can get it in, I’m sorry, I’m sorry.”

Father John: “It seems that you cannot. Don’t worry.”

Shameful but relieved, she gets up still holding her butt with her hands.

Father John: “But I think Thmoas can get it in. Sit back down and, Thomas, would you please push her down by her shoulders. Stabilize her back, so she cannot buckle under the force. Sister Mary, you check and tell us if it is in or not.”

As Thomas walks towards her, she starts to plead “Please, I am sure it is not possible, believe me. Just let me try a different time”. Thomas grabs her by the arm and father John gestures to him to continue.

“Pleeeease! Father John…”

“You should realize that you might get hurt if you do not cooperate with Thomas. Place the toy at your ass, you do not want to be in pain.”

Just like sister Mary many times before, sister Ember understood her helplessness against men. To her surprise it is his words that have more power over her than his muscles. While trying to stop her sobbing, she obediently places the toy on her ass and sinks onto it as far as she can. Thomas pushes with his left hand against her back, forcing her into a straight posture. With his right hand he pushes her down by the shoulder. Sister Mary lays down with her head next to her ass, checking carefully if the toy is in or not. Sister Ember tries to be calm and brave, but the pain becomes too large to bear.

“Aaaaaaaaaaaaaaaaaah!”

Father John: “Is it in?”

Sister Mary: “No, it is not.”

Father Jon: “Continue”

“Aaaaaaaaaaaaaaaaaaaaah!”

“It’s not in”

“Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaah!”

“It’s not in yet”

“Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaah!”

“Almost!”

A loud popping sound can be heard and sister Ember jumps up with the butt plug fully inserted in her ass.

“It is in” says Sister Mary quietly.

“Yes, we heard”, laughs Thomas.

Sister Ember is still rolling on the floor uttering only grunts.

Father John: “Quite impressive. It is rare that a sister manages the third toy on the first day. Take your time to deal with the toy in your ass. We won’t try it with sister Mary. She obviously is not capable.”

Sister Mary felt both relieved and resentful about the comment, but understood that her emotions are not helpful. Instead she observed how sister Ember was dealing with the toy. She seems to calm down. Now that the largest diameter is past her sphincter, the pain is fading.

Father John: “Now that you understand your tasks and training, I can tell you the requirements for level two. You need to have had sex with a hundred masters and be able to take the fourth butt plug from the box in your ass. That is 14 cm (5.5 inch) circumference and 15cm (6 inches) depth. We track the number of masters for you. You will have to request the test with the butt plug as the challenge for level two. Now each one of you goes to her chamber and clean up. In an hour you will each serve your first master. Sister Mary, take your box with the toys and follow me to your new chamber”.

In her new chamber, sister Mary is shown all the equipment and instructed to clean herself and be ready in an hour. It took her 15 minutes to remove the toy from her ass while squatting in the shower. She could not imagine how sister Ember removed hers. Once she is ready, she sits on the bed and waits for her master.

II. The level 1 of sister Mary

After some minutes, she hears a beeping sound and shortly after the door opens and her first master enters. He looks much smaller, weaker and presumably older than father John. It now occurs to her that she does not know what older or younger men look like. But she was happy to realize that she felt attracted to the little man either way. She smiles at him and does not notice that she is subconsciously playing with her nipples in anticipation.

“Good day, are you my master?”

The man smiles “yes my dear. And you are my slave for the time being. So,… I am your first master right?

“Yes, I am so nervous, but also excited!” She giggles and hides her face behind her hair. Embarrassed about her statement, she assumes a dignified pose and follows up with “Ahem, my duty is to please you, master.”

“And how would you do that, slave?”

She blushes “I don’t know. I can put your cock in my mouth or my pussy … what makes you cum?”

He laughs and examines her ribbon “You are adorable… a fresh level 1 sister… they are not very skilled, but it is exciting to discover their bodies with them.”

He gently touches her nipples, guiding his fingers around their edges. At first she wants to pull away, but soon after she enjoys it more and more. When he touches both of her breasts, Sister Mary is melting away. Having another person touch her like this was a new world that she had been missing out on. The soft touches make her yearn for a stronger touch, but he did not give her such relief.

“Wow that feels amazing, please, touch me more, master” She becomes increasingly horny and feels such a desire to be intimate with this man she just met a few minutes ago. Slowly, he starts squeezing her nipples.

“You like that?” “I love it, master! Please continue”

While he gropes her breasts, he pulls out a small electric device and pushes a button, which causes a drawer with lots of sex toys to open up under her bed. The master pulls out two nipple clamps and attaches one on each breast. It felt like a never ending pleasure in her tits. She giggles and makes her new jewelry bounce a little.

The smile on her face suddenly shifts to shock when he tightens the clamps. Pain gradually replaces pleasure. A serious look on his face signals her that the pain is intentional.

“Master, that is too much. Can you loosen it a bit?”

“You have to earn that. Get on your knees and suck my cock so good that I allow your pain to subside.”

She quickly jumps off the bed and slides between his legs and immediately regrets the sudden movement that causes the heavy clamps to inflict more pain on her nipples.

Before she can reach for his cock, he pushes her away, falling to the ground.

“Not so hectic, slave. Move slow and gentle. My pleasure is more important than your pain. Do you understand?”

“Yes, master, I’m sorry, master”

She slowly pulls herself up, takes a short deep breath in order to reset her mind. She smiles and slowly strokes her master’s thighs. After a while she unzips his pants very gradually and stops to ask “I would like to suck your cock, if my masters pleases”.

“That is a good girl, go ahead. I like that a lot more.”

She reaches in and is surprised to find a cock much smaller than the one of father John. Maybe four inches. But she remembers what she was told by father John about her different masters.

“I love your cock, I have been waiting for it.” Weirdly, she was not lying. Ever since her rite of passage, she felt an increasing desire for sex, men, cock, everything. The size does not matter. What matters is the man that she can please with it.

She gobbles it up and sucks the cock that she has earned with her tender touch. Her tits are hurting, but have become numb enough for her to be able to ignore it. Her master enjoys it for a few minutes and then stops her.

“You are doing well, now for the finale, are you ready?”

“Yes master, I am ready for your cum!”

“Put your hands behind your back and keep them there. I’ll help you a bit.”

He grabs her nipple clamps and pulls her towards him. Her scream of pain was quickly muffled by his cock in her mouth. He proceeds to face fuck her while holding only onto her nipples. The pain in her tits came back violently. Her immediate thought is that he is going to rip them off. But she kept sucking, trying to make it pleasurable for him, just like he told her to. It seems to be working, as his breathing gets heavy and he keeps speeding up. Unfortunately that also meant that he is pulling harder and harder. Don’t scream, finish him off, keep sucking, forget about your tits. Keep sucking, keep sucking.

With a loud grunt he finally comes and shots his load in her mouth. While he enjoys the pleasure she just pleads in her mind that he would just let go of the clamps.

“Swallow my cum, you deserve it, my little whore.”

She gulps, smiles and looks up at him. After a short inspection of her face, he finally lets go. She falls back on her ass, holding onto her hurting tits. After a few breaths, she reaches for the screw to untie them, but the master quickly stops her and pulls out a few leather cuffs out of the drawer.

“No, not yet. You may remove the clamps after you put these on and get in pose. These two cuffs go around your ankles, these two around your wrists and the large belt goes around your little neck.”

“And then I can take the clamps off, Master?”

“I am the one who takes them off, but yes, I promise”

She quickly puts on all the gear and asks “Is it good like this, master?”

“Yes, now we get you in the pose. Turn around and put your hands behind your back.”

He binds her arms behind her back by the cuffs and then instructs her to go to the bed and lay on her back with open legs. Out of the drawer he pulls out a long electric device that he places between her legs. With another belt he binds her legs together, keeping the device firmly on her pussy. Then he orders her to kneel on the bed and bend forward with her head touching the bed. He binds her ankles together with the ankle cuffs and uses a chain to connect the ankles with her collar, pulling it tight. She now lays face down on the bed with her ass lifted up and some device between her legs. It was impossible for her to move with all of the restraints.

She muffles into the mattress “Iph phis pose goob?”

“Yes, a very good pose. In return, I’ll remove the clamps.”

When he loosens the devices on her nipples, a huge relief washes over her body.

“Thank you, master! Thank you so much!”

She has already forgotten the device between her legs and jumps when it suddenly starts vibrating. Initially she is scared about the new sensation, but the vibrations felt nice. Really nice actually.

“Have you ever used a vibrator on your pussy?”

“No, master”

“Do you like it?”

“Yes, master, I love it!” She hesitated for a second and got worried about her enjoying herself. “But my pleasure is not important, how can I please you?”

He laughs for a bit, but assures her “You are not doing anything wrong. I want you to come. That is how you will pleasure me now. Relax and enjoy the toy.”

She is not going to argue with him. Her tenseness fades and she allows herself to enjoy the vibrations while he gently pets her on the head. After a minute, she can already feel a build up in her body.

“Master, I think I am about to cum. Yes, I think that I am… hngh ahhhh, yes! Yes!”

Her body tries to convulse in waves of pleasure, but the restraints do not allow her to move. She almost topples, but her master is holding her firmly.

“Good slave, now just two more orgasms to go.”

“Thank you, master!”

“The pleasure is all mine.”

He switches the device to a stronger level and Sister Mary feels the toy vibrating more violently against her pussy. She tries to ride the high of the last orgasm and concentrates on the buzzing between her thighs.

“Come for me, slave. You better not disappoint me.”

She breathes heavily and focuses on her body’s response. After a few minutes of struggling she manages to come a second time.

“Haaaaaaaaaaa… ahhhhhhh … hu … ha. I came a second time for you, master”

Without a further comment, he switches the device to an even higher level. The vibrations are now becoming violent.

“Oh, this is rather strong, master. I’m struggling a bit, but I am trying.”

“I want to you to come a third time. There is no trying”

She is still catching her breath and cannot fully process the demand. The toy is becoming a little distracting. After clearing her mind a bit, she tries to give herself a short break from the vibrations, but the restraints do not allow it.

“Can you switch off the toy for a moment? I think we need to give my pussy a short break before it gets numb, haha.”

There is no response, but the buzzing of the toy. She cursed at herself for making such a dumb suggestion. She tries to move her head and get comfortable, but her gear is not letting her readjust her body. She can’t even see him. His silence scares her a bit. She needs to make her body come. If he says she can, then she can do it. For some time she tries to ignore the toy, feel her own body and reset her mind one more time. Then she focuses on her pussy and her previous orgasms. A few more breaths and she focuses back on the toy.

It takes her a long time. She does not know how long she has been pressing her forehead into the mattress, but finally she can sense a spark between her thighs. It is growing, she can do it. The breathing intensifies.

“I’m coming, master, I’m coming!!”

She grunts into the mattress, her hands clench to white knuckled fists behind her back, as she manages to muster one more orgasm out of her body. It is weaker the third time and dies down fast. After she comes back to her senses she has a tired smile on her face.

“Was I able to please the master?”

“My pleasure starts now, slave.”

He reaches for the toy and turns it up one more level. It violently vibrates against her sore pussy. She is way too sensitive now.

“Please master, I can’t come anymore. It hurts, my pussy hurts.”

He ignores her pleas, reaches for the butt plug that she struggled with so much just two hours ago and lubes it up.

“Cumming so much probably results in a rather clenched asshole. I’m sure it must be difficult to insert this toy.”

“Master, please, be merciful. I have been a good slave haven’t I?”

“You are about to”

He places the toy at her asshole and immediately applies a lot of force, giving her no chance to let her body relax. He manages to open her up a bit, but reaches a resistance half way through that pushes her to fall to the side. This gives him an idea. He lifts her back up into her kneeling position and pulls her by her neck to rotate backwards onto her ass, slowly putting her entire weight onto the toy.

Sister Mary cries in agony. The pain of her pussy is now overwhelmed by her asshole being stretched mercilessly. And the entire procedure she is helpless to move and helpless to plead. Most of her weight is now on the plug, but her ass does not cooperate and instead causes constant pain.

While holding her by the neck, he stands up and points his cock in front of her face.

“Suck it, slave. Suck my cock with love and tenderness and please the master that is the reason for all your pain.”

She opens her mouth and reluctantly puts his cock in her mouth. Unable to move her head, so can only apply suction and strokes with her tongue. Despite all the pain he inflicts her, she understands that all that matters is pleasuring him. She has to forget her pain and focus on his cock.

“I will not let go of your neck, until the toy is in your ass.”

Ok, so she does have to also focus on her ass. She tries to relax, but her body is too tense. It does not matter, she has to get it in. With his cock in her mouth she muffles “Push me more, I need more weight on the toy”

He gladly complies with her suggestion and rotates her more backwards. Her body is screaming in pain, but she pushes herself past the pain and pleads her asshole to widen. With a sudden plop it drives into her ass. It was harder this time, as her ass was just too tense. But she got it in. He rolls her back forward on her knees, with her ass sticking out at the edge of her bed. He takes his cock freshly hardened by her mouth and fucks her pussy.

“I love a tight pussy, especially with that toy inside of you”

“Thanks for the compliment, master. It is all yours to fuck”

It took him excruciating 15 minutes until he came. Both toys were torturing her the entire duration. She obediently swallows his cum and thanks him for it. After doing everything she was told to do, he does not switch off the toy. Instead he unties her hands behind her back and leaves.

“Good slave, until next time. Feel free to untie yourself.”

The door closes behind him and she is still laying on the bed in her folded pose with the buzzing toy between her legs. She tries to shut it off, but her own legs block the access to the controls. She will have to remove her restraints first.

The monitor beeps and when she looks at it, the display says “Your next master will come in 15 minutes. Make sure to wipe yourself clean and rinse your mouth with mouthwash.”

The next one comes in 15 minutes already? She can’t even get up. With her arms freed she rolls on her back and fumbles around the belt that keeps her legs together, but access to the buckle is blocked by her own body as well. In her haste to get the nipple clamps off, she did not pay attention to how the ankle cuffs are connected to her collar and with her head resting on her knees, she cannot see any attachment device. She frantically fumbles for many minutes along the chain until she can find a locking device and it takes her another few minutes to figure out how to open the locking mechanism. She had never learned anything about locking devices in school, which forces her to figure it out in that awkward situation. With the chain unlocked she can straighten her legs, which allows her to undo the buckle and remove the toy from her groin. She takes a second to hold her sore pussy and let out a sigh of relief. But a glance at the display shows her that she has to get ready in six minutes. She takes off the remaining shackles, runs into the washroom and pours mouthwash in her mouth and wipes herself down while rinsing. When she is done, she is sitting back on the bed with only a few seconds to go. When the door opens, she is still heavily breathing.

The second master makes her wear cat ears, a cat collar with a bell, mitten gloves and, of course, a butt plug with a cat tail. Sister Mary is instructed to only answer in meows and purrs. Initially bewildered, she liked the game and happily swallowed his load.

The third master gave her a putt plug and ordered her to lay over his lap, whereupon he slapped her for half an hour. She enjoyed it initially, but in the last 15 minutes he hit her with too much force and she had to wear nipple clamps again. She had to blow him forever, until she swallowed his cum.

The fourth master was a black man who kept calling her “white slave”. He made her call him “black master”, worship has “black master cock” and to beg him to fuck her “worthless white pussy”. She did not understand what the role play was about, but happily played along, until she swallowed two loads of his “superior jizz”.

The fifth master came into the room with a massive dildo that had a length of 20 cm (8 inches) and a circumference of 20 cm (7.8 inches), which scared her tremendously, as she knew she could not take that. Even more surprised was she when the guy asked her to fist him. She had no idea that an asshole could stretch that much! To her relief, her master asked her to put the entire dildo in his ass. He seemed to have no difficulties as he proceeded to fuck her stuffed like that and cum in her mouth twice.

The sixth master used the restraints to bind her in an arched back position and attached weighted nipple clamps on her tits. Afterwards he proceeded to play an hour with her sore asshole by inserting and retrieving the butt plug.

The seventh master only wanted to see her masturbate with the toy, but threatened to hurt her if she didn’t come five times. It took her one hour of ravaging her pussy in order to push her body to climax five times. It was facilitated by the fact that she was allowed to operate the vibrating toy. Due to her efforts, he didn’t hurt her and instead rewarded her with more cum.

By the time the seventh master left, it is 5:45 in the after noon. Her body was spent. Her tits, ass, and pussy are sore and hurting. In her stomach is nothing but cum and she felt so hungry. But the display is already counting down the minutes to the physical training. She gets ready and powers through. After the training a small window in the wall opens with dinner. In a bowl she finds some whole grain bread with legumes and an apple with more apple skin as dessert. Protein to build muscles and fiber to clean out her colon. Compared to the food in school, this was great! She finishes dinner and prepares to go to sleep. She is too tired to stay up longer and falls asleep quickly.

The next morning the monitor wakes her up at 6 o’clock. After a bathroom break, showering and breakfast, she finds herself with one and a half hours time for stretching. Remembering yesterday’s pain, she is dreading it at first, but comes to understand that if she stretches her ass more, the insertion of toys will hurt less. But this time, she starts with the smallest toy and takes her time. After some trying, she finds that she can control her sphincter better. She tries to avoid any clenching and soon manages to insert and retrieve the smaller butt plug without any problem. After half an hour she switches to the second toy. However, her confidence fades when she still cannot insert it using the strength of her arms. Brushing off her defeat, she sits on it like last time, and very gently uses her weight to increase the force on her asshole. She has to stop herself when it gets too painful, but soon after resumes her attempts. At the fourth time she manages to finally get it in. It still hurts, but a lot less than yesterday. What a success! She spends another half an hour popping it in six more times. She is so proud of herself, but finds no one she can share her success with. But either way, her training may make this day a bit easier.

Sister Mary eagerly greets her masters, but is a bit disappointed when the first two masters don’t even stick anything up her ass. The first master is fairly fat and is so limited in his movements that she has to undress him, suck him and ride him until he finishes in her mouth. She is breathing from exhaustion when he rides out on his super sized scooter.

The second master looks quite young, about her age. Despite her slow and gentle blowjob, he comes in her mouth half a minute later. He tries to hide his shame by blaming it on her, which she apologizes for. To her surprise he becomes hard again about 20 minutes later. All it took was some spooning, gentle kisses, and slapping her ass and tits. He fucks her vigorously for a quarter hour, comes, and leaves.

While getting fucked by her third master, he opens the drawer and says “Lets see what we can put up your ass, what is your limit?” Finally, she is able to show off her progress!

“I have managed to put in the second one already, master”

“As a level one sister? Then you still have some improving to do. On your stomach”

She hoped for a different response but obediently lies on her stomach, ass up. When she notices that the toy placed against her butt is not lubed up, she tries to remind him politely “the lube should be in the drawer as well, master”.

He holds the toy in front of her face: “We do not need any lube. Open your mouth”.

“I haven’t cleaned the toy.”

“That is not my problem. We can also go in your ass dry.”

After a second of hesitation she opens her mouth and closes around the shaft. He rolls it around inside, making sure that the toy has been fully coated by her saliva. He places it against her ass and starts pushing. Without the lube, the toy does not slide well. She struggles with the fact that controlling her ass while someone else pushes is a lot more difficult. Despite her master not being gentle, she manages to open up and with pain, he manages to slide in about half of it. He cannot push it in any further and her ass painfully lets her go.

“Hm, maybe it was not enough lube after all.”

Sister Mary lets out a sigh of relief. He needs to apply some of the lube, but then she can show him that she can take it. Shocked, she finds him holding the toy in front of her face again.

“More lube please”

She reluctantly opens up and takes the toy inside. After rolling it around in her mouth, he can insert it a lot easier, but barely makes it half in again. So there the toy goes for another round in her mouth. He keeps switching between her mouth and her ass until her butt is soaked in saliva. Sister Mary realizes that his goal is not to insert the toy in her ass, but rather make her taste her own ass. After several minutes of this game, he puts the toy in her mouth, pushes her face in the pillow and fucks her pussy. The thrust pushes the toy close to the back of her throat, making her almost gag. She has to fight the toy each time he shoves his cock into her. Her gurgling and coughing sounds are perfectly synching to his thrusts. She endures it for five minutes without throwing up, until he is finally out of breath. Carefully, he pulls out the toy from her mouth, soaked with strings of saliva that had been building up from almost gagging nonstop.

With a laugh he explains to her “This is much better lube. I’m sure this will go easily in her ass now.”

He rubs the toy on her ass a bit and slowly but surely pushes it in all the way.

“Are you grateful for making it easier on your ass, slave?”

“Yes, master, thank you for making it easier to go in my ass.”

She thanks him by sucking him off and another satisfied master leaves her alone in her chambers. She barely has the time to clean herself and brush her teeth before the next master is announced.

He also wants her to use the butt plug, but allows her to insert it herself. While she is still trying to push it in, he already starts fondling and kissing her breasts. While he starts out gently, he quickly becomes more forceful, sucking strongly and squeezing her tits with his hands. She enjoys it nonetheless and as her horniness increases, she is able to get the toy in her ass much easier this time.

Once her arms are free to move, he instructs her to give his cock a titfuck, which was easy with him having salivated all over her breasts. Shortly after, she happily swallowed his cum. She had quite a lot of fun with this one.

After he caught his breath, he ordered her to put on the restraints from the drawer. Her smile fades a bit, but she does as she is being told. This time she was restrained in an upright sitting position on her knees, wherein a belt around her legs keeps her legs together and in a bent position. Her arms are bound behind her back and her collar is connected with a chain running behind her back to her ankles.

“Let’s see if that perky tits of yours can make me hard again.”

He grabs her nipples and squeezes them slightly between his thumbs and fingers. With previous masters she had noticed that her nipples are very sensitive. As a result, she loves them being touched. But she does not just want them touched. As weird as it sounds to her, she does enjoy a little pain. Her master seems to understand this, as her breathing gets heavier when he increases the pressure on her nipples. She breathes heavily as her nipples start to hurt. She wants to tell him to stop, but knows that she can’t. There is no point in asking to stop. She knows what he really wants to know.

“Master, this is the pressure where it starts to hurt.”

He is surprised about her answer, but wants to test her cooperation. So he releases her nipples and reaches for the nipple clamps. After attaching them to her nipples, he slowly turns the tightening screws. After a few times he stops and looks at her.

“No, master, they don’t hurt yet. You have to tighten them more.”

With a big smile he resumes tightening while watching her face gradually distort.

“A bit more, master, almost there”

“Aaaaaah, it hurts a lot master … it hurts so much.”

When she looks at the master’s face, she sees excitement. He is not going to loosen the screws it seems.

“you are welcome, my little slave”

“… Thank you, master”

She is not thankful and would love to have them loosened, but she is hoping that cooperating with him will lead to less pain in the long run.

Out of a suitcase that he brought with him, he grabs weights and begins attaching them to each of the clamps. At a pound on each tit, she can’t contain her pain and starts to scream out.

“I am trying master, aaaaah, but it hurts!”

“you are doing well, my slave. But we are not done.”

He attaches more weight until each nipple clamp carries two pounds. Sister Mary is sobbing, but tries to be a good slave. He unties the chain between her neck and her ankles allowing her stand. However, with her legs bound and her arms behind her back, she can barely balance standing up.

“Look slave, you made me hard again. Good job”

A genuine smile appears on her face for a second, before returning to a sobbing.

“Now bend over, I want to fuck that pussy.”

She slowly bends forward until her upper body extends horizontally. She would fall forward with her bound legs and the weights hanging from her tits, if her master would not hold her by the arm cuffs. In this position she is helpless while he fucks her standing from behind. Because of the weight difference between her and her master, it is mostly her being moved back and forth, causing the weights to swing and pull even more on her tits. She tries to be compliant but cannot suppress occasional screams of pain.

Her master seems to enjoy himself a lot. When he is close to coming he moves her even faster, causing the weights to jump around. Sister Mary is screaming constantly adding only more pleasure to her master.

Disregarding the weights on her tits, he quickly turns her around and cums in her mouth for a second time.

When he is done, he unbinds her legs, but keeps her arms restrained behind her back. At the end, he attaches another chain between the two weights and slightly unscrews the clamps, which still firmly grasp her nipples.

“You may remove the clamps now, slave”

With a questioning look on her face she tries to move her arms, turn her torso, but cannot do anything to reach the clamps.

“Master, my arms are still bound”

“Silly girl, you don’t need your arms. You can jump, can’t you?”

She looks at him for a second, hoping that he was joking, but is met with silence.

“Master…”

“Can you jump, slave?”

“… yes master, I can jump.”

After a few deep breaths, she performs a small test hop and whimpers under the pain in her tits. The weights were still hanging on her nipples. She tries gradually bigger jumps, which results in gradually larger pain.

“Master, help me, I cannot get them off”

“I already helped you, by unbinding your legs. It is not my problem that you cannot jump high enough.”

It takes her few more painful hops until the gears are turning in her head. He gave her an idea. Slowly, she crawls onto the bed and stands up. She jumps and lands with straight legs, trying to accelerate the weights as much as possible. The left clamp snaps off, but the right one is still connected to her nipple. Because he had connected the two weights with a chain, the entire weight was hanging off her right nipple. She screams trying to hold it up, but instead collapses on the floor. The weights lying on the floor give her momentary relief of the pain.

“Hahaha, I was hoping that that would happen. I tightened the right one more, so it does not come off that easily. Don’t worry a second jump will do the trick”

She wobbles on her knees to the bed, draggin the weights by her right tit. After a painful ascent, she jumps off and is finally released from the second nipple clamps as well. She sits on the bed and falls back, enjoying the end of her tit torture. After releasing her from the constraints, she gets to hold her sore breasts.

“You know, you have amazing tits, my little slave”

“Thank you, master. It is an honor to have pleased you”

“Well, hang on there, sweety. I am wondering…”

“What is it, master?” She really tries not to let her worrying show.

“I am wondering if you can make me cum a third time.”

“I will happily suck your cock, master.” She desperately tries to steer the conversion away from her aching tits.

“We both know that this is not what I have in mind, slave”

He walks to his suitcase and pulls out several hypodermic needles.

“You see, a level one sister generally does not have to do needle play. But I asked the institute whether we can make an exception and slightly bend the rules. I am a loyal and generous supporter.”

He turns away from her and speaks to the monitor “How about it, can we change the rules this once?”

After a few seconds, the monitor changes to a green color. A smile on his face gives sister Mary to understand that the green light indicates that her master is given permission. She wants to cry, but suppresses it to silent sobbing. He approaches her and gestures to her to sit on the bed.

“Now, do I need to restrain you for this, slave?”

She needs a few seconds to process the question and to utter the only reply she can give.

“No master, I am a good slave”

“Aww, that’s so adorable. You know what, I let you decide: Should I stick it in your nipple first horizontally or vertically?”

Her eyes widen. Nipple? First? What is he going to do? How much is he going to do? Just give an answer, don’t let him wait.

“I think horizontally will feel better, master” It was a lie, but she did not know what to say.

“Ok, I hope you are paying attention, honey”

With a big smile he grabs her left nipple and gives it a few squeezes. She throws her head back in pain. It still hurts so much after the nipple clamps. When he pushes the needle through her nipple, she wants to jump. But all she can do is cross her legs, pull on the bed cover, and scream. He attaches a little cork on the sharp end exiting her nipple and steps back, looking excited at his work. Shortly after he pierces the same nipple vertically.

“You do the right one now, slave.”

She looks at him confused. “I don’t understand, master”

“You now take these two needles and stick them in the same way in your right nipple.”

With a shaking hand she grabs the needle and places it at her nipple. She looks at him and he only answers with a grin and a nod.

She pushes the needle through her own nipple and continues pushing through the pain until the needle exits the center of the nipple. It hurts so much more than the first two needles.

“No, that was terrible. You have to guide it inside the flesh so it comes out of the opposite end, not the middle. Retract it a bit and try again.”

The pain makes it hard to focus and keep a steady hand. At the second attempt she overcorrects the angle and exits out the areola. The third attempt is successful and the needle exits at the opposite end. She drops her tit and breathes a sigh of relief. With no time to rest, he hands her the next needle. This time she only needs two tries until the second needle is correctly pierced through her nipple.

He continues her work, takes a fifth needle and pushes it into the front of her left nipple and deep into her tit flesh. Of course, she has to repeat it with her right nipple. After corking everything up, she finds herself with a total of six needles in her nipples. She glances at his cock and notices that it is still limp. It is not over yet.

Next, he pulls two metal rings with spring-loaded gates out of his suitcase. He opens the first ring, guides it around the needles in her nipples and closes it behind. The first ring is now hanging loosely between the needles and her chest. The second ring is attached behind the needles of the other nipple. He tucks on both rings, which are trapped behind the needles. Sister Mary cries out in pain.

“Don’t worry, your nipples won’t tear. I tried it once with another slave and, if anything, the needles bent instead of ripping out of her flesh.”

So far, she only had to handle pain, but now, her master starts to scare her as well.

“Lie down on your back, slave”

Carefully she turns her head and tries to assess how she can lie down with the needles in tits. Her master wants none of that and shoves her forcefully on her back. Lying like that flattens her tits, making the center needles dig deeper into her flesh. She tries to think about whether the needles can puncture her organs, but is interrupted when the master turns her body around so her head hangs off the bed. His cock dangles right in front of her face while he is towering over her.

“Suck me hard, while I play with your tits”

Without hesitation she takes him into her mouth and starts sucking in order to reduce the time of her tit torture. He kneads her breasts with much force, causing the center needle to scratch around within her tits. Her muffled screams into his cock seem to only cause him to grab firmer. Then he lets go of her breasts and starts pulling up the rings. This withdraws the center needle, but pulls on the two other needles. He keeps pulling until her body is trembling in pain, just to let go instantly, shoving the center needle back into her breasts. This goes on for many minutes. If her face was not embedded in his groin, he could see the tears rolling down her face. After what seemed an eternity to sister Mary, his cock was finally rock hard. She tries sucking extra hard and strokes him with her hand just to make him finally come, but he withdraws.

“Good job, you made me hard for me a third time! Get off the bed, stand up”.

She stands in front of him, with glowing red tits, pulsating pain with every heartbeat.

“Thank you, master. It hurts so much when the master is moving my tits.”

“Don’t worry, I won’t move them anymore. I won’t even touch them, I promise.”

A relief washes over her. “Thank you, master, thank you very much. I promise to make you cum!” Her sobbing slows down and she faintly smiles at him.

He smiles back at her. “Now take the weights and attach them to the rings around your nipples.”

She stands there in disbelief when she points at the weights on the floor that she had removed under such pain just minutes ago. The master is already lying in bed stroking his hard cock.

“Yes, exactly. Don’t make me wait.”

She attaches the weights on the rings and tries to let them hang, but immediately has to grab them to alleviate the pain in her tits.

“No, let them hang” reminds her the master “and then ride my cock until I come”

It was too good to be true when he said he won’t move them. Riding him will cause the weights to shake violently. He wants her torture herself. Maybe she can bargain just once.

“Master, … is there any other way, anything else that I can”

“SHUT UP AND DO WHAT YOU ARE TOLD TO DO!”

This is the first time a man has screamed at her. It terrifies her. She starts running to the bed and jumps on his cock. After the rush of adrenaline wears off, her tits are screaming in pain again. The pain won’t go away. Try ignoring the pain. Move. Move!

She starts moving slowly and in a sensual way, grinding her body against his. When she looks in his eyes, he looks bored and frustrated. So she pushes herself up and fucks herself by moving her ass up and down, while trying to keep her chest stationary.

He starts growling at her “This won’t make me cum, just so you know.”

In resignation, she stops moving and catches her breath. With clenched teeth, she leans backwards and puts her weight on her feet. Slowly she starts moving her entire body up and down with his cock in her pussy. As she starts to speedup, he starts to smile.

“Atta girl, hurt yourself, swing those weights and hope that I cum!”

She goes as fast as her legs allow it, screaming through the pain. After a few minutes her animalistic growls turn to crying. But the rustling of the weights doesn’t stop. She has to make him cum, no matter what. After another eternity, he finally announces that he is about to cum. He orders her to kneel in front of him, holding her tits towards him.

Sister Mary jumps off the bed and frantically holds her tits. She is not going to risk anything by supporting the weights. After he plastered all over her, she has to lick up all the cum on her tits. Frantically she scoops up everything into her mouth, swallows, and shows him her empty mouth. He nods to her and she is finally allowed to collapse on the bed. The needles still hurt, but the weights are no longer dangling off her tits.

Before she can even start removing the needles, he already left her chambers without any further comments. Corking up the needles caused the formation of microscopic hooks, which makes the withdrawal of the needles slow and painful. She is so occupied with her tits that she even forgets to remove the buttplug. Her next master punishes her by removing and reinserting it for an hour until her ass was swollen. She does not let him know that her tits actually hurt more.

To her surprise she does not receive another master at five o’clock. Instead, the institute is performing several tests on her that she does not understand. Afterwards she is brought into her chambers and told to wait. Maybe they realized that the needle torture was too much for her. Maybe she would even get an apology from her master. Maybe he will enter any second.

Instead, father John comes in with a folder full of paper.

“Father John, is everything alright with my breasts?”

He looks confused for a second and laughs “What? This is not about the needle play. But it is about your tits.”

Sister Mary lowers her head in shame, thinking how dumb it was of her to think that she would be comforted.

Father John: “For some of our sisters, we perform breast augmentation. We already considered you a candidate due to your large breasts, but we usually wait until around level 4. But sometimes, sisters get a sponsor that will pay for the procedure if it is performed earlier. It looks like you are lucky and earned your sponsor today in the form of the gentlemen that tortured your tits. You should thank him.”

She is stunned. So many things she does not understand. Level 4? Sponsor?

“What is a … breast augmentation?”

“Essentially, we will put you under anesthesia and insert bags filled with liquid into your breasts. Here are some example photos of the results with other sisters. This woman has 1000cc, this one 2000cc and this one 3000cc. We will probably start with 1000cc and fill it up gradually depending on how well your breast tissue takes it.”

He grabs one of her tits and examines the skin.

“And I think your breasts will be able to take a lot.”

She grabs her breasts that still hurt from the torture a few hours ago “will it hurt”.

“No, you won’t be awake during the surgery.”

She tries to be brave in front of her great father John.

“Ok, I will do it for you, Father John.”

“I’m not asking. It is already paid. He says he can’t wait to play with your tits again. But the surgery has to wait a few days. We perform it earliest at level 2. You better keep practicing.”

“I am, father John. I won’t disappoint you.”

“Anyway, we also tested your breasts and you have an abnormal amount of breast lobules. We will definitely induce lactation with you, starting tomorrow. That means you will take domperidone and other drugs every day. Furthermore, during your stretching regimen you will attach pumps to your nipples to further promote lactation. Here, take these pills”

She swallows the pill and asks “Father John, I don’t understand. What is lactation?”

“Milk production. In a few weeks your breasts will start to produce milk. It is not unusual to produce 2 Liters (70 ounces) a day. For you I expect at least twice the amount.”

“What do I do with the milk, father John?”

“Feed it to supporters, let them milk you, sell it or even use it as food. Don’t worry, there will be use. I assume a lot will be spilled. It is likely that you lactate when aroused and especially during a climax. So, you may expel a lot during your work. Here are two pumps you attach to your nipples at least during training. Any more questions?”

“I don’t know, this is a bit overwhelming.”

“Great, now get back to your chamber for your training.”

“I am always in my chamber. Will I be able to leave at some point, father John?”

“Not as a level one sister. Goodbye now”

With these words she sits alone in her room with the pumps in her hands. What are they doing with her breasts? She is trying to make sense of everything, but the monitor interrupts her to announce the physical training. She has to hold her tits in jumping exercises in order to keep the pain bearable.

Before she starts the stretching, she takes one of the pumps off its charging station and turns it on. The device starts to buzz and a quiet sucking sound can be heard. Curiously she attaches it to her left nipple, which is subsequently sucked into the pump. It initially tickles, causing her to giggle, but then some pain from the earlier torture sets in. But with time, she enjoys the feeling. Carefully she attaches the other pump to the right nipple and begins her stretching routine. Despite her swollen anus, inserting the second toy is a lot easier today. Part of it is the experience, but she has to admit that the pumps are arousing her, making it easier to relax and motivate her more to insert her toy. After a while of practicing with the second toy, she gives the third toy an attempt. She gets surprisingly far, but her ass just can’t open enough to get the biggest diameter in. After two hours of training, she removes the pumps and the toy and with the rest of her horniness gone, she soon after falls asleep after her second day at the institute.

She is still struggling on the third day, but finally gets the third toy in on the fourth day. As she does not dare to lie to her masters, she admits her success to them who gladly use the opportunity to torture her ass with the larger toy. The additional and involuntary training does allow her to try practicing with the largest toy on the fifth day, but 14 cm circumference is too large for her.

In the afternoon of the sixth day, instead of the next master, a sister comes in. She still wears a robe and seems to be part of the administrative staff.

“Sister Mary, follow me, a master has requested a session with two sisters.”

She follows her to an elevator that takes her up one level. They stop at a door in a long hallway.

“This is the chamber of the other sister. When the master is gone, I will fetch you to return to your chamber. Enter now.”

Sister Mary slowly enters the room and sees sister Ember sitting on her bed, greeting her with a smile.

“Sister Ember! How are you doing? I haven’t seen you for a while.”

When she gets closer, she notices that sister Ember has a green ribbon around her neck. On closer inspection she also sees that she is wearing nipple rings.

“Sister Emaber, why is your ribbon green? And what about the rings?”

“This morning I was promoted to level 2. The rings are just a few hours old.”

Sister Ember is visibly proud and makes sure that sister Mary touches her new ornaments.

“Does that mean you got the big toy inside?

“Yes”

“And you had sex with 100 men already?”

“Sure I have. I take it that you haven’t?

“No, I am at 92… and I still can’t manage to push the largest toy in my ass…”

“Don’t worry, I’m sure you will get there eventually. Just keep practicing.”

Sister Mary does not feel comforted but almost patronized. She still thanks her and tries to change the topic.

“Anyway, what is about to happen? They told me that we are going to share a master now?”

“Yes, they told me that usually you have to be at least level 2 for that. But since we shared the rite of passage, they made an exception for you.”

“Have you ever done that? I mean, you are already level 2.”

“… no, this is my first time as well.”

“I am a little scared.”

“Don’t worry, sister Mary, I will take care of you.”

They share a smile and sit next to each other on the bed. Shortly after, the master comes in dragging a cart wagon with various tools into the chamber.

“Good afternoon my little slaves. When I heard there is a team of fresh new sisters, I had to get an appointment. So you are different levels indeed. My my, are those fresh nipple rings?”

“Yes, master. I got them this morning.”

He grabs one and looks at it. She moves a little bit towards him, in order to reduce the pull on her tits.

“Still hurt like a motherfucker, right? Hehehe”

“… yes, I still haven’t gotten used to them, master.”

“They all get used to them. Spoils the fun a bit, hehe. Well my little blondie, lets even the playing field. Let me get the nipple clamps.”

He takes out some nipple clamps and firmly attaches them to sister Mary’s nipples. They don’t clamp as hard as the ones yesterday, but their structured surfaces make it impossible to slip off.

“Ok now, both kneel on the floor, facing each other. I want to see you kiss while I catch my breath.”

He sits on the bed, while sister Ember initiates by grabbing sister Mary’s head, pulling her closer. Sister Ember still has to get used to being intimate with her old classmate, but soon joins her in their sensual kiss. It is such a rare experience to receive tenderness that she indulges in it more, touching sister Ember’s breasts and caressing her thighs. The sweet moment is soon interrupted with their master shoving his cock between their mouths.

“Now serve me. I want to see how well you can suck my cock.”

They start sliding their mouths along the side of the shaft and alternate caressing the head with their tongues. After some time, sister Ember takes the initiative and inserts the cock into her mouth. Sister Mary sits a bit lost at the side having nothing to suck.

“Haha, it seems the brunette one won this round. Blondie, you lost. Here is your punishment.”

Memories of yesterday’s pain rise up, as he attaches half a pound of weight onto each of her nipple clamps using a padlock. However, compared to yesterday, the smaller weights do not hurt her as much.

He announces the next test while going to his kart, pulling out a 1 meter (40 inch) double dildo with length markings on its side. He throws it at them and orders them to insert an end into each of their pussies. After having them masturbate with it for a while, he instructs them to push the toy against each other, wanting to see who can insert more. At first they slowly move their body around the dildo. But when the master starts reading out who is ahead, they start using more force. They try to outdo each other more and more and eventually smash their pussies onto the dildo, hitting each other in the cervix trying to get more of the dildo inside. After a minute of watching them hurt each other, getting nowhere deeper, he stops them and looks at markings on the dildo.

“It’s a tie, 18 cm (7 inches) each. What does that mean?”

“How about no one lost this round, master?” Sister Ember playfully smirks at him.

“Ha, nice try, brunette. I say no one won. Weights for each of you.”

Sister Ember sports half a pound on each of her nipple rings, whereas sister Mary has to carry a pound per nipple. This is not going her way.

“Alright, my slaves, on your knees, ass to ass. Let’s see who can take that dildo deeper in the ass.”

While sister Ember already got the dildo inside probing her depth, sister Mary is still struggling to get it in. Not because of the size, but because she is becoming nervous. Why does she have to compete with sister Ember? It is not fair.

By the time she pops in the dildo, her master already announces that sister Ember reached 15 cm (six inches). Then he forbids them to touch the dildo anymore. They have to insert the rest just by moving the asses.

At the beginning they cooperate well, as they both proceed to insert more. But when sister Ember makes no more progress at 7 inches (17.7 cm), she cries out in pain whenever sister Mary pushes the dildo. Sister Mary stops moving at five inches, in order to spare her.

“I’m sorry, I didn’t mean to hurt you.”

Her master gets frustrated “What do you mean you are sorry? This is a test of your abilities. Are you going to lose this round as well?”

Lose? No, she can’t lose. Her tits still hurt from yesterday. She looks at sister Ember, who is still contorting her face in pain.

“I’m sorry, sister Ember. Hang on tight.”

She starts pushing again, causing sister Ember to cry out. But she does not stop and keeps going while her master is counting.

“five, five and half, six, six and a half, aaaaand seven! Another tie? You girls better start fighting, unless both of you should get more weights, hahaha.”

So they do. Both of them are rotating their asses and smashing them into each other while crying out in pain, trying to outperform each other. The master has a great time and cheers them on, while kicking the weights of the girl that is falling behind. After five minutes, no more progress can be made and sister Mary is declared the victor with eight and a half inches. Now they are tied, each with one and a half pounds hanging from each nipple.

Then he sets up the last game. He removes two lids in the ground and inserts two rods in the uncovered openings. On the other side, the rods have 25cm (ten inch) dildos. The rods are arranged three feet (90cm) apart. After setting up the dildos, he arranges stepping boxes next to each rod onto which the girls are to step on. They are told to insert the dildos on the rods into their asses. Once they are in, he removes the stepping boxes, forcing the girls to balance on their toes. The girls find themselves in a position in which they are stuck. They can’t remove the dildos due to the lack of foot support and they can’t move away with the dildos in their asses.

He then picks up the weights on the girl’s nipples and connects them. The force onto each nipple increases significantly so that the girls immediately hunch forward in order to relieve the pain. Sister Mary subconsciously tries to touch the weights in order to support them with her hands. The master instantly slaps her hand away.

“If any of you touch the weights again, you will regret it. Now, where did we put that dildo from before? I forgot which end was in whose ass, but I am sure you don’t mind. Now both open up.”

He pulls their heads apart and inserts the dildo into their mouth. The second they start gagging, they try to pull away just to feel more pain in their nipples caused by the weights holding them together. They are flailing their arms trying to suppress the desire to remove the dildo or hold the weights. Gargling turns to crying and crying turns to screaming.

After enjoying the show for some time. He asks them “Does it hurt? Do my slaves need a way out?”

They frantically nod their heads and gargle in agreement. Not too much in a hurry, he grabs two tables and places them behind each girl. With a lever he adjusts the height of each table to be out of hand’s reach and places a key onto each table.

“There you go. Behind each of you is a table with a key to the padlocks on your tits. Go ahead, set yourself free.”

After trying for a minute to reach the table, they start to understand what he wants them to do. They need to lower themselves even further on the dildo in their asses. Following this realization he gets to enjoy them screaming forever trying to jam the dildo just further into their asses. At some point they realize that leaning back gives them a better angle. So a battle ensues over who gets to lean back and since no one wants to give up, they both pull with full force on their tits in order to get more of the dildo up their asses. After 10 minutes of screaming, sister Ember manages to get a hold of her key. When she puts the key into the lock, sister Mary screams for her to stop and listen. Despite having painfully competed against each other, she pulls the key out of the lock and lets her speak.

“Sister Ember, please, if you unlock the weights, both of our weights will hang on my tits. But, but, if you let me get my key as well, we can unlock them at the same time and no one will have to endure all the weight.”

Sister Ember, stands there with her key, so close to salvation from the pain.

“Pleeeease, I beg you!”

She sighs and gives in.

“Go ahead, I’ll move forward, sister Mary”

Both of their legs are shaking under the prolonged strain, while sister Mary tries to jam the dildo up her ass. After a few more minutes and begging to not give up, sister Mary is finally able to pick up her key.

However, when the girls try to insert the keys, sister Ember fumbles and accidentally drops her key. She glances at her master who just shakes his head.

“I’m not helping you. Maybe blondie will pick it up once she is free, hehe.”

Sister Ember gives sister Mary an accusing look, who can only stand there with a face of guilt, asking for permission. Sister Ember, anticipating the pain she is about to experience, takes a breath, closes her eyes and gives a nod. Sister Mary opens the padlock and the weights swing towards sister Ember, who lets out a scream that seems to not end. The dildo drops on the floor and sister Mary pleads for the support block. The master agrees, but takes his time while sister Ember is screaming at the top of her lungs. As soon as she can, sister Mary steps on the block, pulls the dildo out of her ass and jumps for the key. After what seems an eternity, the weights drop to the floor and sister Ember is freed as well.

“And the loser of today’s games is the brunette!”

She is still kneeling on the floor holding her sore tits.

“My name is sister Ember … master.”

“Ok, sister Ember, so let’s see what your reward is. What is the largest circumference you can put in your ass?”

“I just barely passed the level 2 requirements with 14 cm (5 inches) circumference.”

He binds her hands behind her back and straps a mouth gag around her head. The mouth gag has a dildo that reaches inside her mouth and close to the back of her head, giving her a continuous urge to almost gag. Afterwards he puts a bag over her head and locks the bag with a collar around her neck. Being blinded, barely being able to breath and the dildo making her gag, she has trouble not starting to panic.

Sister Mary is instructed to lay with her back on the bed and sister Ember has not kneel next to her head and bend forward until their nipples touch. The master connects each nipple ring with a nipple clamp, locking both firmly in place. If either of the sisters moves too much, she will pull on each other’s sore nipples. Being blinded by the bag, sister Ember painfully realizes her predicament after she tries to pull her upper body up from her uncomfortable position.

“Sister Ember, since you lost, you will have to insert the 14 cm butt plug into your ass. Sister Mary, since you won, you get to insert the butt plug.”

Sister Mary holds the toy and has a hunch of where this is going.

“Master, can I have the lube, please?”

“No lube for losers, slave. Now get to work.”

She can barely reach sister Ember’s ass in her awkward position. When the toy touches her ass, she jumps up a bit. She did not understand the master through the bag and sister Mary has to explain it to her again. Her heavy breathing turns into sobbing, which is abruptly interrupted by gagging.

Sister Mary manages to insert a third of the toy and notices that the gagging and coughing causes her ass to tighten.

“Please, sister Ember, you will have to try to relax. I can’t get the toy inside.”

The only reply she gets is some gargled screaming and sobbing. After a few minutes of twisting and trying, sister Mary realizes that she cannot get more of the toy in. There is too much friction caused by the huge butt plug. A quick glance at her smiling master makes her understand that there will be no more help or chance for bargaining.

Hearing sister Ember violently gag gives her an idea. She pulls the toy out of sister Ember’s ass and starts inserting it into her own mouth. She goes deeper until she also starts gagging and choking, but does not pull out. After a few moments of bathing the toy in her saliva, she inserts it back into sister Ember’s ass. She twists and turns, lubricating the insides with her saliva. After a while, she pulls out and resumes gagging on the large toy. Each time she pushes it into sister Ember’s ass, it moves more smoothly and deeper. In the meantime, sister Ember has focussed on not gagging, which allows her to figure out what is happening by hearing and feeling. She tries her best to cooperate by keeping calm and relaxing her sphincter. However, even with the saliva, sister Mary only manages to get half the toy inside, not being able to apply enough pressure for the thickest part to pass through. She pulls with all her force, but it only causes her entire body to shift towards sister Ember, which pulls on both their nipples.

“I can’t push further from this angle, sister Ember. Can you sit on it?”

She tries to sit on it, but has to lift her upper body, causing both sisters to scream while their nipples are pulled.

“Aaaaaah, wait, wait, wait. Let me try to get my body higher.”

Sister Mary pulls herself closer until her head hits sister Ember’s knees. Then she lifts her upper body by her elbows, while sister Ember tries to lean back onto the toy. For a moment, sister Mary tries to shift her legs under her body, but her movement pulls on the connected nipples and both sisters fall back down on the bed in pain.

For many minutes, both sisters try to move into positions that allow sister Ember to sit on the toy. It takes 15 minutes of repositioning and sister Mary choking on the toy a few more times until the butt plug finally pops into sister Ember’s ass.

“Good job, brunette, you actually got it in. Here is the number combination to the lock between your nipples. Unfortunately, I have to go, so I can’t help you. But having seen how resourceful you are, I am sure you don’t need my help. Hehe.”

He tosses a piece of folded paper to the ground and leaves. After the door closes shut, sister Ember makes some gurgling noises, questioning what happened.

“The master has thrown the number combination to the ground, but it is many feet away on the ground, I can’t reach it. I guess we are supposed to get it… which means we have to get down from the bed.”

Sister Ember shakes her head in disagreement and utters pleading noises, which turn to a sobbing when she starts to accept her situation.

Since sister Ember’s hands are tied behind her back, she cannot hold onto the other girl. Sister Mary embraces sister Ember with all her strength and slowly rolls both of them off the bed. Despite all efforts, she can’t keep each other close and the falls causes their nipples to violently pull on each other. They quickly move towards each other, but need a minute of rest and crying to recover from the pain. After carefully crawling in tandem to the piece of paper, sister Mary reads a note with a number combination and the words “the keys are inside”.

The number combination unlocks one of the locks, but the other lock has a key hole.

“Sister Ember, the other lock has a keyhole, the number combination cannot unlock it. The paper says ‘the keys are inside’… I don’t know what that means?”

After a few moments of thinking, sister Ember seems to have an idea, but she cannot communicate it and since she is attached to sister Mary, she cannot properly gesture it either. It takes sister Mary an embarrassingly long time until she understands that a butt wiggling of sister Ember is supposed to indicate that the toy is to be removed from her ass.

After a lot of painful pulling, they manage to retrieve the plug, which reveals a compartment with a key. They try to open the lock on their nipples with the key, but it does not fit. Visibly frustrated, sister Ember takes forever to make sister Mary understand that the key is supposed to unlock her collar. With the bag removed and the mouth gag finally removed, sister Ember is able to take a normal breath again. After calming down, she says “the code is ‘1822’”

“What? How do you know?”

“It is stitched on the inside of the bag. I tried to scream it at you, but it was impossible to say with the gag in my mouth.”

The code was correct and both sisters can fall to the ground. They are lying there, breathing and holding all their sore body parts. After a while, sister Mary breaks the silence.

“… I am sorry that you dropped the key, after you let me get mine. It was your head in the bag, because you wanted to help me.”

“… the master tortured me a lot today… but seeing you stumble through the lock puzzle was almost more frustrating”

Sister Ember lets out a small laugh, causing sister Mary to laugh as well.

“Sister Mary, did you lick the toy in my ass in order to lube it up?”

“Yes, a pretty good idea, right?”

“The master pitted us against each other and then wanted you to hurt me, but you helped me instead. Thank you, sister Mary.”

“No problem. I have to admit, I did want to hurt you at first… I was jealous of your achievements. You are already level 2… and even father John was impressed when you took the large toy in your ass. But hurting you would not make me better than you. I just have to accept that you are better than me. So, the best I can do is to help you.”

“Sister Mary… don’t put yourself down like that. I… I had a small advantage. After I turned 18, they made me wait for the rite of passage, probably for you. So I asked for tips on how to prepare myself. Finally one of the sisters revealed to me that I should stretch my ass. For two weeks I put anything up there I could find, even a small apple. That was the reason I could take the toy up there.”

“So you were an apple ahead of me I guess?”

“Ha, that is a weird way to put it, but I guess. Oh lord, what is going on in your head. It took you so long to figure out that the key is in the butt plug. Now can you guess where the key for my arm restraints are?”

Sister Mary looks with a blank stare at her, unable to find the answer. Sister Ember laughs: “it is probably in the mouth gag.”

She was right again, and soon after finally free. They both sit up and continue their conversation.

“Sister Ember, it seems to be up to us whether we want to ascend to higher levels. But it seems so difficult and painful. Do you think it is worth it?”

“Well, look at my new chamber. I got a bigger bed and now I get to leave the room for physical exercise. I want to see what more benefits are waiting for me at higher levels. And truth be told: I love sex. The more I have it, the more I want it. So I guess I’ll keep climbing.”

Sister Mary feels comfort in her words. She does like sex, but seemingly not to the degree as sister Ember. But her fighting spirit is reignited.

“Thank you, I will try my best as well. Maybe I will be able to see you again. I’m curious what progress you will have next time!”

They grin at each other and the door opens. The sister from before instructs sister Mary to leave and return to her chamber. Tonight she practiced extra hard during her stretching exercise. She almost can insert the largest toy, but eventually gives up vowing to succeed the next day.

In the morning she quickly finishes her preparation and breakfast in order to resume stretching as quickly as possible. She gives it her all and tries to jam the largest toy in, but still fails. Disappointed by the setback, she tries to finish her second goal of having sex with a hundred masters on this day. Her enthusiasm pays off as the masters come more quickly. By the end of the day she reached 102. However, she does not manage to get the largest toy in until the morning of her eighth day. She immediately requests to be tested for level two and gets to meet father John a few moments later.

“Sister Mary, you requested to be tested for level two. According to our data you have met the requirements of having sex with a hundred masters. The second requirement is that you can insert the largest toy we provided in your ass.”

“It is right here, Father John.” She turns around and wiggles her butt with the toy inside.

Her joyous confidence fades a bit, when the father painfully removes and reinserts the toy for confirmation. Nonetheless, she is overjoyed when the white ribbon is exchanged for a green ribbon.

“Every time a sister achieves a higher level, she has gained the right to have sex with me once. Do you wish to claim your right, sister Mary?”

She had never thought about that being a rare right. But standing in front of the man she has been taught to worship, she does not waste much time and claims her right. This time he does not passively sit in his armchair but actively fucks her, and fucks her well. She did not get the chance to remove the plug stretching her ass to her limit. However, she still manages to take eight inches (20.3 cm) of his massive cock. But with six more inches to go that does not stop him from hitting her cervix with each stroke. However, she does not feel pain and only experiences ecstasy. By the time she swallows his cum, she had come three times already. This was truly a privilege she wanted to experience again.

After she comes to her senses, she is brought one level higher, to her new chamber. From a drawer, father John brings a green box with five sets of toys.

Father John: “In order to reach level 3, you have to be able to insert larger toys in both, your ass and pussy. This first set contains five butt plugs. They all have a length of 15 cm (5.9 inches), but increasing diameters starting from 15 cm (5.9 inches) in one cm steps to 19 cm (6.5 inches), which is required to pass the test. The second set has six flexible butt plugs. These are very soft, but long toys with a length starting from 16 cm (6.3 inches) to 22 cm (6.7 inches). The third set has two rigid dildos, one with a length of 18 cm (7.1 inches) and one with 20 cm (7.9 inches). The fourth set comprises dildos for your pussy. The smallest has a circumference of 15 cm (6 inches), the largest a circumference of 20 cm (7.9 inches). The last set has a single dildo for your pussy with a length of 20 cm (7.9 inches). You have to be able to fully insert all five toys for level 3.”

Still shocked by the requirements she slowly accepts her box with the toys.

“However, with all the stretching, your holes should not lose grip either. Therefore, the physical training will include exercises for strengthening your pelvic floor muscles and your anus. For your physical training, you are allowed to leave the chambers to a common room shared with other sisters that contains training equipment.”

Hearing about her privileges fills her with pride.

“Thank you father John! I will train very hard, and of course stretch for level 3… wait what are the requirements for level 4? How many levels are there?”

“The requirements for level 4 are for your ass a circumference of 24 cm (9.4 inches), a flexible plug with a depth of 35 cm (13.8 inches), and a hard dildo with a length of 25 cm (9.8 inches). Your pussy has to take a length of 25 cm (9.8 inches) and a circumference of 24 cm (9.4 inches). I will not provide further information on higher levels. Now sit down on the bed.”

She sits down and tries to process the seemingly insurmountable requirements. Therefore, she does not notice that father John has picked up a needle from a small box. She jumps a bit when he grabs her left nipple with pliers.

Father John: “As a level 2, masters can start throat fucking you and you will wear nipple rings. Now, prepare yourself, this will sting a little.”

She realizes that she cannot stop him anymore and clenches her teeth. It does not sting a little. It hurts a lot. But she is too proud to show that in front of father John. She just closes her eyes and clenches her fists while he is operating. By the time she opens her eyes, she sees a ring dangling from her left nipple. Before she has the time to even touch her new jewelry, he already clamps her right nipple and soon after pierces it with the needle. When the second ring is attached she finally lets out a sigh of relief. She touches the rings, but stops herself when she notices the pain it causes. How did sister Ember endure her nipple torture on the same day she got her rings? Her body shudders thinking about the pain she must have suffered.

“Congratulations, sister Mary. You are officially a level two sister.”

She blushes so much. This is the first time she received any praise from father John.

“Now that you are level 2, we have to fulfill the demands of your sponsor. Time for your breast implants. Come, let’s go to the operation room.”

The breast implants, the sponsor… she already forgot about that. She feels scared of what they are about to do to her. Slowly she slides off the bed and follows father John to the elevator.

A few minutes later she is lying on a green operating table with a needle in her vein. She is supposed to count from 10 to zero, but does not even get past number six.

She wakes up in the bed of her new chamber with father John standing next to her.

“Sister Mary, do you feel dizzy? Can you stand up?”

“Father John… I… feel a little bit dizzy, but I think … I can stand.”

She slowly gets out of bed and stands in front of father John. After a few seconds she remembers that she had surgery for breast implants and hazily looks down. The shock of seeing much larger tits wakes her up. She wants to touch them, but father John shoos her hand away.

“Try not to touch them too much on the first day. I want to see how they look when you are standing up. They need to set over the course of a few days, but I feel like the surgery was a success. Where do you feel pain?”

“A bit of a burning sensation under my tits, father John.”

“So only at the incisions then, good. You will get some pain medication for the next two weeks. But we cannot give you pills for that, as you need to be able to feel pain in your ass and pussy. Instead you wear a bra with pain relieving cream in the morning and evening.”

“Why must I feel the pain in my ass and pussy, father John? Do the masters demand that?”

“No, you need to be able to listen to your body, so you don’t push yourself too far. This decision is for your own benefit.”

Sister Mary is surprised by the answer, she did not expect him to care for her.

“Sister Mary, correcting poorly healed breasts is bothersome. Therefore, for the next two weeks, masters are not allowed to hurt your tits… too much. However that will mean that they will mostly focus on your pussy and ass. Try to make the best out of it and use it as training. Your physical training will be adjusted to not include your upper body. Are you still pumping your nipples?

“Yes, father John.”

“Keep pumping, this will not affect the healing a lot. It is already nine o’clock. You may skip today’s training. Good night”

When he is gone, she is still standing at the same spot, looking down at her tits and then around her new chamber. There is a mirror! That must be a level 2 privilege. She carefully walks over and looks at her huge tits. Like he said, they have not set yet, but they look quite nice. The rings dangle with every little jiggle. She feels sexy and even poses in front of the mirror a bit. When turning around, she sees that she still has the large butt plug in her ass. She was so fixated on her new breasts that she had forgotten about it. But it does not make it easier to remove. She squats for a long time in the shower until she can finally remove the butt plug. She falls exhausted into the bed and soon after falls asleep.

III. The level 2 of sister Mary

The morning of her ninth day, the monitor wakes her up with the instruction of putting on the pain relieving bra. Her breakfast included some pieces of apples. Probably another level 2 perk.

She removes the bra, attaches the pumps and starts stretching. After some warming up, she manages to insert the 14 cm (5 inch) butt plug from yesterday. Out of curiosity, she attempts inserting the one with 15 cm circumference, but has not success. Instead, she is curious about the flexible plug. After lubing up the 18 cm (7 inch) plug, she finds that she can already fully insert it. With a smirk she pulls it out and tries the one with 20 cm (8 inches). She gets it fully in, but does notice a slight pressure that does not allow her to insert more. She remembers in biology class that her intestines extend in a manner with many curves. She will have to find a way to navigate them.

She decides to stop with the long flexible plugs and inserts the hard 18 cm (7 inch) dildo and is surprised to find out that she can only insert it only barely. It would seem that rigid objects are a lot more difficult and that part of what allows deep insertions is softness.

Now onto her pussy. She pulls out the 16 cm (6.2 inch) circumference pussy dildo. To her surprise she cannot fit it in. She had never really tried stretching her pussy. The largest object she had was father John’s cock, which was bigger but stretched her massively. Maybe arousal would help her get it inside. She starts masturbating while enjoying the nipple pumps, but does not dare to come, as she had only come with a master or father John. After several minutes, she notices that her pussy is soaking wet and warm. After applying more lube, she sits on the dildo and pushes with her entire body weight. Her body is craving the toy, but does not open up to receive it. The frustration builds up and she pushes harder until the head slowly vanishes inside her. Her body rewards her with huge amounts of pleasure, causing her to keep pushing. After many minutes, the entire 16 cm (6.2 inches) of the toy are inside her. She can’t contain it, she has to let the orgasm wash over her.

Afterwards, she carefully removes the foreign objects she forced into her body and is amazed by the size she manages to insert. After a break of a few minutes to catch her break, the monitor informs her about the next master arriving in 15 minutes. Quickly, she tidies up the room and cleans herself. When the master comes in she is already obediently waiting on the bed.

She is visibly shocked when she realizes that the man that enters with a smile and rubbing hands is the sponsor, the man that tortured her tits with weights and hypodermic needles.

“There she is with her fresh new tits. How is my slave doing today?”

“I am good master, a bit sore around my tits though …”

He carefully touches her tits and her nipple piercings. She tenses up, but does not dare pull away.

“Don’t worry about the tits today. I want them to heal. Dear lord, they look great. I can’t wait for them to get bigger.”

“Bigger?… master?”

“Don’t worry about that … yet, hehe. You know what? Don’t call me master today. I want you to call me ‘keeper of my tits’. That will be fun.”

“Yes… keeper of my tits.”

“You know, I am a very wealthy man. The money I paid to have your tits augmented, I made in an hour. Your body will be modified forever and all it cost me was an hour. Even after many years when I am dead, you will know that your tits are so big because of me. Isn’t that great?”

“…yes, keeper of my tits.”

“You are welcome?”

“That you, for modifying my tits forever, keeper of my tits.”

He laughs and gently plays a bit more with her or rather his breasts.

“Ok, so let’s play with the rest of your body. Get the largest toys you can currently fit inside your body.”

“Yes, master… I mean keeper of my tits.”

They go through the butt plug, the flexible plug, and the hard anal dildo. However, when she cannot fit in the big dildo for her pussy, she mentions that she may not be aroused enough. The moment her comment leaves her mouth she curses herself, as she remembers how he forced her to orgasm last time. But it was too late. He restrains her again into a kneeling position with the vibrating device between her legs and forces two orgasms out of her. He keeps the device on and forcefully pushes the large dildo into her pussy. The size and her folded pose make the insertion a lengthy process. He fucks her ass for a while and praises her tightness due to her stuffed pussy. Her hopes that he comes and finishes her torture fade when he starts inserting the long flexible plug in her ass. Not only is the insertion more difficult due to the toy in her pussy, but her body is folded up in a way that makes it difficult for the plug to travel deeper. However, the master overcomes this problem with brute force and manages to get the entire toy in her ass.

Once the flexible dildo settles in place, she can relax. As much as the torture was degrading her and the insertion was painful, sister Mary enjoy the fullness of having the toys inside her. So while she is getting face fucked and swallowing his jizz she comes for a third time.

Sister Mary is already worried what he will do to make him hard again, which usually just means more severe torture. When he pulls out the long flexible plug from her ass but leaves the dildo in her pussy, she is worried that he is not done with her ass. Her worries turn out correct when he tries to insert the butt plug in her ass. However, all the lube, his strength, and her screaming are not enough to insert the plug. So he rolls her backwards until she sits on the toy. She has to sit a long time with a stretched sphincter trying to move her lower body in a way that gives the toy space to fully enter. When the toy is finally in, she has tears rolling down her eyes.

While she is sitting on both toys, he has to hold her by the collar, to prevent her from toppling over. He grabs the long flexible plug he had previously pulled from her ass.

“You probably heard already that ss a level two slave, you have to learn how to take cocks in your throat. Since I am your first master since your ascension, I’m sure you can’t do it yet. But how about we train a little. How far can you take this in your mouth? Open up.”

She glanced at him for a second, hoping that he was joking, but was met with an unwavering stare. She takes a breath, cogs her head back and opens her mouth. He lowers it vertically into her mouth until it hits the back of her throat, causing her to immediately gag and cough. However, the master keeps the toy in position, not allowing the toy to get out. After letting her suffer for a few seconds, he withdraws it followed by violent coughing from her.

“I can’t, it just makes me throw up, master.”

He immediately shoves it back down her throat, further than before.

“What do you call me?”

She looks at him, gurgling and muffling words that won’t get past the plug in her mouth. Only after her body strongly buckles in panic, does he pull out again.

“Keeper of my tits, I am sorry, I forgot *cough* I’m really trying but I can’t control my body.”

“That is called a gag reflex. Everyone has that. But you will be able to train it away.”

“How can I train it away, keeper of my tits? Please, I want to learn.”

He is slightly annoyed by her willingness to cooperate and would have liked to see her resist more first. But he does not want to stand in her way of becoming a perfect fucktoy.

“*Sigh* You control yourself, don’t panic when it touches your throat. Breathe through your nose and suppress instinctive behavior. Over time, your body will react less and less.”

“Thank you, keeper of my tits. I’m ready to try again.”

He lowers the toy into her mouth while she closes her mouth and tries to focus. She still gags like before, but keeps fighting and does not move her head away. After a while, the saliva keeps gathering in her mouth. When she swallows it, she notices that she can at last partly suppress the gagging. After a few minutes she still does not have control over it, but she noticeably reduces gagging and choking. He pulls out and lets go of her, shaking the tired hand that held her so long.

“You are improving. I’ll rest my hands a bit and then I’ll shove it down as far as I can. Let’s see where your limit is, honey.”

“Yes, keeper of my tits. I’ll try my best.”

She does not look forward to it, but does not want to anger her master. After a few minutes he pulls her back up and slowly lowers the toy back in her mouth. As soon as the gagging begins, he keeps pushing. Sister Mary tries to focus, tries to swallow, tries to reason away her panic, but her body wants to eject the toy from her throat. It keeps getting coughed up and subsequently shoved back down. Very slowly, the toy inches its way down her throat and after a long fight, her mouth closes around the base of the plug. However, her gagging becomes too strong and he finally withdraws the entire plug from her throat. They repeat the process two more times. While she gets the entire toy down every time, she can’t control her coughing and gagging yet. Nonetheless pleased with his slave, he fucks her one more time in the ass, makes her clean his cock with her mouth and swallow his load.

He unties her hand and leaves her to free herself again. She goes and washes the toys, just in case the next master switches holes as much again.

When later one of her masters pulls out the flexible plug out of her ass in order to stick it down her throat, she realizes the futility of her cleaning ritual and accepts that she is going to taste her own holes a lot from now on. After a few masters she almost wishes that they would torture her tits, just so her ass and pussy can take a break from time to time. But she reluctantly also wishes they would play with her nipples more, because she desires it. They still sting and have to heal, but the piercings elevated her sensitivity and touching them causes even more sexual arousal. She finds herself playing with the subconsciously and her movements when fucking increase if it causes the rings to dangle more.

At four o’clock she is surprised when five men enter the room. They explain to her that a level 2 sister may be gangbanged. She has to kneel in front of them and suck them all hard. In the process one of them accidentally comes prematurely, making it one of the first of many loads to swallow. She subsequently gets spit-roasted on the bed. They switch holes so many times that she loses track of where a cock was before she sucks someone off.

However, they praise her efforts and even manage to make a come a few times. Everyone seems to be having fun and sister Mary enjoys herself as well. After swallowing another four loads, she has to suck them hard again and they try to fuck her in her pussy and ass at the same time. She initially struggles, but gets cheers when she finally gets into a position where she can get rammed in both holes with full speed. Motivated by positivity, she sits up asking for someone to fuck her mouth. The enjoyment of the company and the rough sex earns her another orgasm, which is rewarded with a few more loads of cum and a short break where she can catch her break. In this time she is asked what toys she is currently training with. She offers to show them and asks them to insert the toys in her. With her pussy and ass stuffed, they allow her to use the vibration device to come two more times, while she sucks them all off one more time. Two hours and fifteen loads later she gleefully kisses them goodbye. She was happy to have new experiences with so much fun.

Five minutes before six o’clock, her chamber door opens and the monitor reads “training facility can be accessed”. A bit reluctantly she steps out and follows some other sisters along a door hall to a room with training equipment. According to instructions she was given by the monitor she is only training her legs and butt in order to better allow her tits to heal. To her disappointment, none of the other sisters approaches her. While looking around during breaks she notices that a sister is training with a huge butt plug in her ass, running on a treadmill. She then carefully observes the other girls and notices that they are all wearing butt plugs, some are even stuffing their pussies.

Feeling out of place, she walks to one of the other sisters trying to ask her about the toys, but gets immediately rejected.

“Don’t bother me, newbie.”

Sister Mary is shocked by the reply and when she notices the other girls shaking their head or snickering, she apologizes and resumes training. After some time, she finally spots sister Ember and asks her about the toys.

“You are not wearing one? Why are you not stretching?”

She quickly turns around and shows that she is plugged as well.

“I thought we are only supposed to stretch during the stretching training.”

“That is a time slot that we are given to focus on stretching, mostly to push our limits. But you want to maximize your stretching as much as possible.”

“So you wear it during physical training as well? I didn’t know that.”

“No, not only during the physical training. I wear it all the time, when I sleep, eat, shower, during training, all the time. I only remove it before meeting a master.”

“What??? How was I supposed to know?”

“Everyone tries to progress by themselves. It is up to you to find out how much you want to progress. And everyone quickly finds out that wearing toys all the time helps a slot. Well, everyone but you I suppose. The toys don’t really hinder me. I mean… truth be told, they feel nice, right?”

“Oh no, I am so much behind now… yes, it feels nice, unless a master forces it into you…”

“And that did not give you the idea to stretch more? Sister Mary, you need to think a bit more, you are not a child anymore.”

“I guess… I should. I didn’t know how much everyone wants to progress. Is it really better to rank up?”

“That is entirely up to you. Personally, I love it. I’m sorry that you seem to not feel the same way.”

“I just had a gangbang that I did like a lot. Maybe I was unlucky and they mostly send the brutal ones to me.”

“Well, stretch more, like all the others do.”

“Why do the others not talk to me?”

“This is a competitive environment. Everyone wants to be better than the other. So the girls shy away from providing each other help. I mean, look at me, I probably should not have helped you either. You might become one more sister to compete with now.”

Sister Mary gives her a surprised and sad look. Sister Ember smirks and tries to comfort her.

“But I’m glad I helped you, sister Mary. We are a team, we did the rite of passage together, don’t you remember?”

Sister Mary can’t resist smiling back.

“Thank you, sister Ember.”

“No problem, but let’s not be late with our training.”

Sister Mary quickly resumes her physical training. In her head, she makes a plan on how to maximize the time to stretch. Sister Ember ignited her fighting spirit and she does not want to fall behind anymore.

During stretching training latter, she makes no progress, but she keeps her ass and pussy stuffed while trying to get the flexible butt plug deeper in her throat. At the end of the day, she can insert 5 inches in her mouth with little gagging.

She lubes up the 15 cm (5.9 inch) butt plug and tries to sleep with it. But when she wakes up in the middle of the night, she reluctantly switches to the 14 cm (5.5 inch) plug, in order to not miss out on sleep.

The morning of her tenth day, she needs a few seconds to realize that she managed to sleep plugged for the night. Overjoyed she immediately reaches for the larger 15 cm (5.9 inch) toy and inserts it easily. Cleaning herself and eating breakfast is still slightly uncomfortable, but she does not want to miss out on any more training. During her stretching procedure she notices that the 16 cm plug seems not an unreachable goal anymore and keeps pushing until she finally manages to get it in. She wants to remove it to alleviate the pain, but stops herself instead in order to force her ass to stretch more.

She can’t practice stretching her pussy at the same time, so instead keeps working on her throat. She can’t increase depth in her throat yet, but reduces her overall gagging for the time being. Finally she removes her 16 cm plug and inserts the flexible plug in her ass. She brute forces a depth of 23 cm (9 inches), but notices resistance and deduces that progress will slow down soon. At the end, she tries the 17 cm (6.9 inch) pussy dildo, but just can’t make it in. Considering that she had trained her butt all night, she decides to keep the 15 cm dildo in her pussy right before the next master showed up.

The first few masters of the day were quite routine. She has to endure the 16 cm (6.3 inch) butt plug a few times and a lot of men want to shove the flexible butt plug down her throat. With the initial shock gone, she mostly struggles with the gagging itself. However, she welcomes the training and her cooperation is rewarded with lots of climax and cum as well.

Later in the day, she welcomes the master who had her act as a cat last time. She immediately goes down on all four and walks to her master, who is pleased by her quick adaptation. However, when she sits down and meows, he gets mad and hits her on top of her head.

“No, today you are a dog. Bad dog!”

She cowers and lets out a tiny yelp instead.

“Better”

Her new costume does not really change. She puts on pointy dog ears, a collar, and some furry paws on her hands and feet. She has to wear a tailplug with her maximum circumference of 16 cm (6.3 inch). The beautiful but heavy tail keeps pulling on her already stretched asshole with every movement. As a result, she struggles when her master asks her to sit, lay down, and roll over. So, when he throws a ball and instructs her to fetch it, she wobbles somewhat slowly to get the ball. It takes her some time to find the ball under a wardrobe. She picks it up with her mouth and drops it to his feet, whereupon he slaps her face.

“You are so slow, I expect you to be faster! How can you lose it under the wardrobe?”

She tries to recover quickly from the shock and lowers her eyes while trying to readjust the plug stretching her ass.

“Does the plug hurt your ass?”

It takes a bit too long to shake her head. So he grabs her tail and pulls so much force that sister Mary is pulled back two feet. However, with the plug still stuck in her ass, he steps on her ass cheeks getting better leverage to pull. Not having time to relax her body, she can only scream in pain until the plug pops out. Before she can even sit down he commands.

“Stay, head down!”

He picks up the ball she had fetched and stuffs it in her ass. The green ball only has a circumference of 10 cm, which, for once, does not mean any trouble for her. The trouble start when he jams the tail plug in her ass.

“There you go, now you can’t lose this toy anymore. Aren’t you happy?”

She quickly nods.

“That is not how a dog shows that it is happy. Wiggle your tail, for fucking sake.”

She immediately smiles and waggles her tail just to find out that it pulls heavily on her stretched ass.

The master pulls out a yellow ball and throws it into the room. Sister Mary jumps after it and chases it down as fast as she can. Proudly holding the ball in her mouth, she prances back to her master.

“Better, no go suck my cock.”

After enjoying his slave for a while he reaches for her tail again and yanks on it again. Unsure of what he wants, she keeps pleasing his cock until she figures out that he wants to pull out the toy again. She quickly pushes with her ass trying to expel the toy. When it finally pops out, the green ball also falls out and rolls on the ground.

“Fetch it you dumb, bitch.”

She quickly turns around to scurry around for the toy. When she returns it, she is rewarded with the green and then the yellow ball in her ass. Just with her trained ass, she can tell that the yellow ball has a circumference of 12 cm. And, of course, the tail plug with 16 cm.

“Happy?”

She furiously waggles her tail, noticing her ass getting fuller and the balls rubbing against each other. Without requiring a further command, she resumes sucking his cock. After a while, he yanks on her tail again, just to spill out both balls as well. Soon after, a red ball with 14 cm circumference joins the other two in her ass. The red ball is large enough to block her rectum and she can keep them all in. The balls are filled with air, allowing them to compress in order to get in. Her guts still feel uncomfortable when the butt plug seals the balls all inside her. She tries to avoid any unnecessary movement.

Her master is satisfied with his puppy, lays on the back and commands her.

“Now ride me bitch.”

When she gets up too slow from her knees. He scolds her and makes her run around the room fetching random objects that he throws around. After some time of running around while having her guts filled with foreign objects she quickly hurries to the bed when he commands her again to ride him.

Her ass signals her to not move, but she dutifully jumps up and down on her master’s cock. When he starts sucking on her huge tits, she manages to enjoy the session and even manages to come twice before she is rewarded with another mouthful of cum.

He yanks out her tail plug one more time and finally leaves her alone. When she is along in the room, she pushes out the red and the yellow ball, but the green ball does not appear anymore. She can feel it logged in her rectum, but it does not budge anymore. After squatting and pushing for minutes, panic starts to settle in. She can’t reach the ball with her fingers, she can’t push it out, it is stuck. Her sobbing is interrupted when the display says that the next master will be here in 5 minutes. With no other way out, she cleans herself up, sits on the bed and receives her next master, all with a stupid ball stuck in her guts.

Her next two masters fucks her in every whole, but when he fucks her ass, he does not reach deep enough to get close the ball.

However, for the next event a group of six masters booked a two hour session filled with all kinds of activities. After making them all (and herself) come at least three times, they switch to all kinds of toys and since they can’t torture her tits too much eventually insert everything at their disposal into her pussy or ass. When they insert the flexible dildo in her ass she can feel the dildo hitting and pushing against the ball. The masters don’t relent and keep pushing until the ball does not move anymore. Sister Mary hides the pain and enthusiastically fucks and sucks the men to exhaustion.

When they catch their breath, she holds her side and collapses to the ground.

“Wow, looks like we fucked her silly. Haha, what is the matter honey?”

“Everything is fine, master. May I remove the dildo for a moment? I’ll put it back in again, I promise.”

“Oh, you promise? Well, I promise you can, after you have pushed the flare into your ass as well.”

Worried that they take the offer back, she keeps pushing on the dildo in her ass. The tip of the dildo is coiling up against the ball and starts to press against the side of the intestines. But it is too late to stop there. All the men are watching as the base wanders inside and her ass closes. The cheers make her smile for a second, but her face grimaces again in pain.

“Alright, what is the matter, slave?”

“Everything is fine, may I pull it out for a second?”

“Sure, honey. You were a good sport today. Are you ok?”

The man notices that she does not dare to bother them.

“I order you to tell me what’s matter.”

“Master, I have a ball stuck in my ass for a few hours already and I did not manage to get it out. I am very sorry.”

The group of men laugh for a bit, but then one of the men steps forward.

“I’m a doctor, let me take a look.”

He feels her stomach and sure enough feels a bump.

“Holy shit, she is right. There is something. And you still put up such a show for us. Not bad, kid.”

After everyone gets to touch her stomach, the doctor instructs her to breathe out and pull in her stomach. After a few attempts she is surprised to find her stomach vacuumed inside so much that a bump of the ball is clearly visible. The doctor pushes the bump while she is almost suffocating, holding her breath until he manages to dislodge it. After a short shock, she gets up and squats and pushes in front of the masters. After a few minutes a huge cheer goes through the room, when the green ball drops onto the floor. She hugs the men and wants to thank them, but their time is over and they leave with a smile and waving goodbye.

During the evening, sister Mary vows to now also stretch the deeper parts of her ass, hoping she never has to struggle with a stuck toy again. From then on, she sleeps with an entire flexible dildo deep in her ass as well as a large plug stretching her sphincter.

In the following days, her stretching routine is a lot more successful. Now that she is sleeping and training with the butt plug, she increases her anal circumference almost daily by a centimeter. For a while she struggles with the flexible butt plug, but one day she manages getting past a turn and soon after manages to insert 20 cm into her ass. Delighted about her successes, she tries to weave into her conversations with the masters what toys she is currently training with, which more often than not results in training sessions with the toys. However, once she realizes that many masters want to be the one that she manages to go up a size, she limits her suggestions to masters that appear less violent. All in all, she is now at a point, wherein, over the course of each day, her asshole barely gets a chance to close.

In the course of 9 days (at day 19) of being level 2, sister Mary manages to hit all criteria for level 3 and requests to be tested. However, to her disappointment, father John did not visit her until an hour after her request.

“Is everything ok, father John? It appears you are quite busy.”

“I had to finish another test just now. I am proud to say that our sisters are progressing so fast. Well, sister Mary, you requested to be tested for level three. You need to be able to insert in your ass the widest toy, the longest soft toy, and the longest hard toy we have provided. Furthermore, you have to show that you can insert the widest and longest toys for your pussy.”

Despite struggling with most of the toys, sister Mary shows off her skills with a smile. After she has passed all the tests, father John exchanges her green ribbon with a blue one. Before he can say anything, sister Mary immediately claims her right to have sex with her beloved father John. She still can’t take his entire cock, but is happy to see that she manages to take most of his cock in her ass. Getting fucked harder than by any of the masters, she is rewarded with a massive load of cum that she eagerly swallows.

She is subsequently escorted one level higher, to her new chamber. Similar to last time, father John brings a blue board with five sets of toys.

Father John: “In order to reach level 4, you have to be able to insert larger toys in your ass and pussy. This first set contains four butt plugs. They all have a length of 17 cm (6.7 inch), but increasing diameters starting from 20 cm (7.9 inches) in one cm steps to 24 cm (9.4 inches), which is required to pass the test. The second set has six flexible butt plugs with a length starting from 23 cm (9 inch) to 35 cm (13.8 inch). The third set has five rigid dildos, one with a length from 21 cm (8.3 inch inches) to 25 cm (9.8 inches). The fourth set comprises dildos for your pussy. The smallest has a circumference of 21 cm (8.3 inches), the largest a circumference of 25 cm (9.8 inches). The last set has a single dildo for your pussy with a length of 25 cm (9.8 inches). You have to be able to fully insert all five toys for level 4.”

Father John: “As a level 3, masters can start fisting your pussy and you will wear a clitoral hood ring. Now, prepare yourself, this will sting a bit more than last time.”

She gets worried about the ring, but only really understands what is meant, when a needle approaches her crotch. Before she can form a sentence voicing her objection, she is not able to hold back her screaming when the needle pierces through her flesh. Neither does she stop while the ring is inserted into her clit. Still in shock, she wants to crawl into a fetal position, but bravely stays seated on her bed resorting to sniffling.

“Congratulations, sister Mary. You are officially a level three sister.”

She tries to muster a smile, but is still struggling with the pain radiating from her pussy. Father John starts probing her breasts.

“It seems your implants have healed well already. Let’s see how well they perform.”

He pulls out a gun shaped device and shows it to sister Mary.

“This is a heating device. It can generate a short burst of heat energy at a focal point a few centimeters in front of it. Let me show you.”

He abuts the device against her left tit and pulls the trigger. The gun beeps for two seconds and sister Mary is shocked to see that her breast is swelling.

“Your breast implants are mostly filled with liquid hydrocarbons, which has a low density. As a result, we will be able to increase the implant size without adding as much weight as a saline filling would. Furthermore, we have added small amounts of liquids with low boiling points such as dichloromethane. It stays a liquid at body temperature but becomes gaseous at slightly higher temperatures. A foaming agent in the implants allows for an even distribution of the gas. Each shot increases the volume of your implants by about 1000cc.”

He proceeds to increase the size of her other tit.

“Any pain?”

Sister Mary is still in shock, trying to process what was done to her body. A bit frustrated, father John has to repeat his question, which finally catches her attention.

“I only feel a stretching sensation, father John.”

He proceeds to apply another shot into each of her breasts.

“It keeps stretching. Please, father John, I am scared.”

With the third shot, she starts to feel some heat in her breasts and with the fourth shot, she starts to whimper. Her tits are now hurting and she begs him for mercy. Disregarding her pleas, he applies a last fifth shot into each of her breasts.

“There is just enough liquid for a fifth shot. The size of your tits has increased by about 500cc each. That means we are at 1500cc each.”

“It burns, master John… are they going to stay like this?”

He does not pay much attention to her worries and inspects her tits for size and possible damage. They work perfectly, just as planned.

As the heat starts to become more noticeable, she becomes increasingly anxious. Seeing her panic, he rolls his eyes and takes a glass of water from a table. Father John slowly pours the water over her tits, which start to shrink again.

“The gas will turn back to a liquid once cooled, for example with some cold water. The mixture in your implants is pretty stable. So we can do this as much as often as we like.”

Sister Mary, breathes heavily but manages to compose herself, with the pain and breast expansion gone. Once she is calm, he explains more about her new life.

“As a level three, you will get a bigger bed and a window to the outside. Furthermore, you have a music player with a ***********ion of classical music.”

He presses a few buttons on a remote and the player starts playing a Beethoven sonata. Sister Mary is mesmerized. She had never heard music apart from random humming, but listening to such refined music was a completely new experience.

“What is this? It is so beautiful!”

“The second movement of the Pathetique sonata. But all the pieces are sublime.”

After a few seconds he stops the music and sister Mary looks at him.

“Sister Mary, you have made a lot of progress in little time just now. But stretching your ass and pussy comes easy at the start. Be careful not to injure yourself from now on.”

As expected, she is enthralled about his worries, but he does not care enough to tell her that she makes him less money when she is injured. Keeping her in her naive belief, he only bids goodbye and leaves her in the room.

Since it is already evening, she performs her physical training and afterwards tries all the new toys. However, she finds that she cannot progress any further yet. In the face of such defeat, she insists on sleeping with her widest butt plug. It keeps her awake a long time, but in the end her stubbornness prevails and she can fall asleep.

IV. The level 3 of sister Mary

The next morning, sister Mary is a bit shaken when she recognizes the first master of her new day. But she quickly composes herself and greets him.

“Good morning, keeper of my tits, how may I serve you?”

“Aww, she remembers me, how sweet. And all it took was modifying and abusing you. Let’s get started with your ass. Bring me the biggest toy you can fit in your ass.”

“I’m still struggling with the 22 cm toy, keeper of my tits.”

“I like struggling. Get to it.”

After a few tries, she manages to work the entire toy up her ass. Disregarding her advancements in stretching her ass, he orders her to stand up and turn around. He binds her arms behind her and attaches her cuffs with a chain to her butt plug, forcing her to arch her back. Due to her posture, she needs a lot more time blowing her master until his cock is hard and dripping in her saliva.

He pulls out a rubber band and winds it around both her nipple piercings, tightly connecting both her nipples. He is pleased to hear her breathing getting heavier as it tells him that her nipples are already hurting. Just to be sure, he squeezes her nipples between his fingers causing her to scream out loud. Satisfied with his work, he sits on the bed.

“Put my cock between your tits and give me a nice no-hands tit fucking.”

She waddles with her stretched ass over and kneels down between his legs. After a lot of trying, she manages to get her tits around his cock. However, when she tries to move her tits, she notices that the chain between the cuffs and her butt plug does not allow her to move her upper body much. So she has to resort to using her legs to move up and down.

After 5 minutes of squatting to please her master, she has to take a break and catch her breath.

“Just a moment, keeper of my tits, my legs are giving up.”

“Don’t worry, let me continue for you, my little slave.”

He firmly grabs her nipples and forcefully moves her tits up and down on his cock. Sister Mary weeps as she tries to move her legs in the rhythm that her master is pulling on her nipples. Once he is satisfied with the pace, he lets go. He has to torture her nipples a few more times, as she struggles to keep the pace. When he finally comes, she throats her entire cock to get some leverage other than her legs. She makes sure to swallow everything and can finally collapse onto the floor once her tits slide off his softening cock. She is breathing heavily, chest heaving, with her nipples still connected. Her master’s only physical activity was to come hard from her boob job.

“Good job. I don’t know about you, but I am spent. How about some reinforcements?”

He grabs a device with a microphone.

“Bring her in.”

Moments later, the door opens and a woman enters the room.

“Greetings master. At your service.”

He gestures to sister Mary, who is still laying face down on the floor, with her arms bound behind her back.

“Help her up and sit her on the bed.”

Sister Mary barely gets on her shaky legs and drops onto the bed, without any disregard for the toy stretching her ass to her limit. Sitting on the bed is still more comfortable than the hard floor.

“Thank you very much, sister…?”

“Sister Robbie.”

“Thank you, sister Robbie.”

She looks up, seeing a tall beautiful woman smiling at her. Still exhausted from the exercise, it takes her a while to realize that the woman has a massive cock.

“Sister Robbiee, … you have a … penis?”

Her master laughs, after having eagerly awaited her reaction.

“Haha, you seem surprised. This slave here is transsexual. Born a man, but made to a woman. This place really has everything now doesn’t it! I love it. Well, go on, suck it!”

Sister Mary has to bend down far to grasp the head of her cock with her mouth. She manages to suck it into her throat while it is soft. But once the shaft starts to swell, she can barely fit it into her mouth. After working for a few minutes, she stares at a glistening 30 cm (12 inch) cock. Almost as large as the one of her beloved father John. Sister Mary’s initial bewilderment gradually fades and turns into curiosity, turns into desire. She wonders how much she can take. Her master makes himself comfortable on a chair and orders sister Robbie.

“Fuck her face.”

Without hesitation, sister Robbie takes sister Mary’s head and shoves her cock as deep as possible into her mouth. Sister Mary gets to breathe only sporadically while having her face raped. After a few minutes of violently stretching her throat, the master orders sister Robbie to come. She pulls out of sister Mary’s coughing throat and shoots massive ropes of cum into her mouth. She has to take a big gulp in order to swallow it in one go. Too bad, sister Mary was curious about getting fucked by that huge cock. Her chance seemed wasted on the blowjob.

Their master does not give them much time for a pause and orders sister Mary to lay on her back.

“Now, fuck her pussy.”

Sister Robbie seems not fazed by the order and proceeds to place her still hard cock against sister Mary’s pussy. She still has the toy in her ass, leaving little room to fit the enormous cock in her pussy. Sister Robbie is pushing, but can’t get in. The large head rubbing against her clit is creating an anticipation that drives sister Mary wild. She wiggles her pelvis trying to get a better angle. When it finally pops inside, the cock can only slowly travel inside, barely scraping by the big toy in her ass. Sister Mary just stares with wide open eyes while processing her body being stretched so far.After sliding in about two thirds of its length, sister Robbies’s cock hits the cervix, causing sister Mary to utter a small whimper. Sister Robbie does not waste more time and starts thrusting. The toy slows down the movement inside the tightened pussy. So she rolls sister Mary to the side and grabs her thighs as leverage. Sister Mary gets her pussy pounded with no mercy. But she does not mind. It feels amazing accommodating such a massive tool inside of her. Keep going, she can take it. Her body responds and she convulses under a massive orgasm. Sister Robbie is ordered to pull out and to serve her another load of cum. However, there is no rest in sight for her.

“Remove the toy from her ass.”

Sister Robbie removes the chain from the toy, pulls out the plug, and shows it to the master.

“Shove it up your own ass.”

Without hesitation, she pushes the toy against her ass and buries the toy in her ass in one swoop while still standing. Sister Mary looks at astonishment at what ease the plug vanished in her ass. That is the first time that she notices that sister Robbie wears a purple ribbon around her neck. Maybe she is a higher level than herself. May she…

“Now fist her ass.”

What? Sister Mary still has not fully registered the order when sister Robbie’s fingers are already pushing against her sphincter. In a matter of seconds, four fingers are inserted in her ass. However, when she approaches the knuckles, her ass resists further entry. Sister Robbie does not pause for long and gradually pushes with more force. They need several tries until the knuckles finally pass her sphincter. The fist forcefully slips in and punches her in the gut. Sister Mary lets out a groan and reaches for the arm in her ass to pull out, but Sister Robbie does not budge.

“Don’t disappoint our master, sister Mary.”

She contemplates for a second and lets go of her arm, sobbing a defeated “ok”. The master laughs and instructs sister Mary to get on her knees bending forward. With her hands still bound behind her back, she has to bury her face in the bed, while getting viciously fisted for several minutes. With her colon burning form all the thrusting, she is instructed to walk over to her master for a last tit fuck. Walking with a fist up her ass was not easy. She almost fell forwards but was pulled back by sister Robbie’s arm in her ass. The moment she squats in front of her master in order to put his dick between her tits, her legs already start hurting again.

Another pain she almost forgot was the pull between her nipples. She would have been brave enough to not cry. However, her master pulls out the heating device and proceeds to inflate her tits wrapped around his cock. She pleads for mercy.

The more her tits are expanding, the more her nipple rings are pulled apart. When the inflation is complete, her pleads have already turned to screams of pain. However, the master smiles and enjoys the show. After she has calmed down a little, he turns to sister Robbie and instructs her “Make her make me cum. Hehe”

After a few moments of thinking, she nods and repositions herself for better leverage so she can push. Sister Mary has not even registered the instruction yet and jumps when she feels sister Robbie push her hand up her ass. However, it dawns on her once Robbie starts to push rhythmically. Initially, she can keep pace, but when her legs get weaker, she groans in frustration much to the joy of her master.

“What’s the matter? You have all the choices. You can decide whether you want your legs or your ass to hurt. And if your tits are hurting, it is up to you when you make me cum. I should rather feel sorry for sister Robbie who has to control you… like a frustratingly unresponsive hand puppet. Now dance for me, little hand puppet.”

She tries her best to give him a good tit fuck, but after several minutes, her legs can barely move. After receiving stern looks by the master, sister Robbie changes strategy from thrusting her arm into sister Mary’s ass to lifting her by the ass. As a result, the titfuck resumes its pace, but under constant screams of pain from sister Mary. Unrelentingly, sister Mary slides her tits up and down his cock, either with pain in her legs or pain in her ass. Eventually, everything hurts. Her master enjoys the good work of sister Robbie and the screaming of sister Mary. This seems to do the trick and she finally gets to swallow his last load for the day. She slips her tits off his cock and her ass of sister Robbies hand.

The rubber band is cut off her nipples and she is left lying on the floor. Her rest is cut short when the monitor reminds her to get ready for the next master. She gets through the day without too much trouble, but her ass stays sore until the evening. Nonetheless, that does not deter her from sleeping with her ass plugged.

From then on, masters occasionally made her have sex with trans women as well. After the oddness of the new experience fades, she enjoys it more and more, but still struggles sometimes with their capabilities. It turns out that they all have massive cocks that seem to generate huge amounts of cum with next to no down time. At one occasion she was gangbanged by six trans sisters and had to swallow 30 loads totaling to about half a liter (17 ounces) of cum. That day she skipped dinner.

Just as she had been told, her progress slowed down. After a week, her ass can take 21 cm in circumference and 25 cm in depth, whereas her pussy can take 22 cm in circumference and still 23 in depth.

However, on the next day she notices a different kind of progress during her training, when she sees that the pumps are filled with milk from her breasts. She announces it to the monitor in her room, not knowing if someone even listens. To her surprise, 10 minutes later father John appears in her room even at such a late time.

He takes her pumps, glances at them and hands it to his assistant who weighs the milk on a scale.

“About a 150 grams, father John.”

He nods at her, whereupon the assistant leaves with her equipment.

“Did you produce milk in the morning, sister Mary?”

“No, father John, only just now.”

“Good. Keep pumping in the future. Here is a set of larger pumps.”

“Father John, they have huge containers. Is this for my milk? What is going to happen?”

“We don’t know yet. These are one liter containers for each of your tits, which should suffice for now. After each pumping session, you place the filled containers in this collection box, where someone will fetch it.”

“What should I do if I produce milk while being with a master?”

“That is up to the master to decide.”

And so they did. The next few days, many masters were interested in her breasts. They sucked on her tits, made her suck her own tits and tried milking them. Initially, she did not produce enough for more than two or three masters a day, but her milk production quickly intensified. After a week, she produces 1.5 L (50 ounces) a day and double the amount after two weeks.

The first thing she does when she gets up is pumping just to release some of the pressure build up overnight. However, since her nipples strongly react to arousal by ejecting milk, the masters demanded her breasts to be as full as possible. Therefore, she is not allowed to pump more than half a liter after waking up. As a result, her breasts are almost always full and aching to be drained. By the time she receives her first master of the day, her tits are already leaking and feeling so swollen that she begs everyone to be milked.

Not only is she looking for relief, but also for pleasure. Her nipples have gotten incredibly sensitive since she started to produce milk. On top of that she found herself to be constantly horny. With each passing day since her rite of passage, her arousal had been increasing. But the moment she started lactating, she has been experiencing an almost frustratingly high level of horniness, barely quenched by a climax. As a result, she comes several dozen times a day. Her sex drive is barely satisfied by the many hours of sex with the masters. Even when she is alone, she often ends up masturbating.

Her horniness pushes her more and more to go further when stretching. It is luck and not caution that she does not cause too much damage. Apart from her own training, she gets stretched a lot with her masters. Some of them like to get drunk and now start inserting their beer bottles and beer cans into either of her holes. Furthermore, she gets fisted at least once per day by one of the trans sisters. She loves getting fucked by their huge dicks, pushing them to get as far as possible. Challenging them so much usually means she has to swallow many loads, or she rather gets to. With every load she is guzzling down, she loves it more. The masters test her by cumming on her tits, in her pussy, in her ass. It does not matter, she scoops it up and downs it every time.

Her enthusiasm is tested soon by a group of masters. She is escorted to another chamber, where she is meeting sister Ember again. She also already sports a blue ribbon and enhanced breasts. But they don’t seem to produce any milk, at least not yet? Is she surpassing sister Ember? She smiles at her and makes sure that her milk filled tits are swinging with each step. When sister Ember’s jaw drops, sister Mary skips and grins, radiating with pride.

“Dear lord, sister Mary, what happened to your breasts?”

“I’m lactating. They have already produced liters of milk. Here, look!”

Sister Mary gently strokes her nipple, until streams of milk are shooting through the air. She grabs her breast and guides the stream into sister Ember’s gasping mouth. She turns away fending off the unexpected liquid, but curiously tastes what got in her mouth.

“Heavens me, it tastes like milk, and so sweet. I did not know breasts can do that!”

“Do you think that yours can do that too?”

“I don’t know sister Mary. Heh … I am not a cow, you know.”

Sister Mary moos, which causes them both to erupt in laughter.

When the door opens, they quickly compose themselves and sit upright. Sex masters come into the room and sit on respective arm chairs, followed by ten trans sisters that stand in a line awaiting orders. After the door closes, one of the men explains.

“Here they are, the two young girls. We have heard that you love getting ravaged by the cocks of these magnificent women. These fine gentlemen and I have decided to raise a small fortune to put you to the test. Which one of you can take more? We will see. Ladies?”

The ten sisters turn the masters in unison.

“Yes, master!”

“Ravage them”

Without hesitation, they go for the pair of girls and pull them onto the bed. Soon after, all of the holes are filled and fucked furiously. Despite their experience and training, they can’t take any of those massive dicks to the balls. Each thrust hits a barrier inside. But the girls don’t mind. The master was not lying, they both enjoyed getting plowed so intensely. Their moaning and groaning is interrupted by cheers of the audience when sister Mary’s tits start spouting milk. Both sisters convulse into their first of many climaxes and keep begging for more. The trans sisters soon follow suit and fill their mouths with seemingly endless amounts of cum. After half an hour, they get a short pause where they suck off all of the six masters, just to jump back onto the bed for more drilling. After an hour, they drain their masters again. By now they are too exhausted to go on top and ask be be fucked laying on the bed. After 1.5 hours, sister Mary’s tits were drained and stopped expressing milk. At the two hour mark, they feel their holes hurting. After three hours they can’t tease out any more orgasm out of their bodies. The masters talk with each other and finish their conversation by nodding. The old man stands up again.

“Thank you ladies, you can rest for now.”

Sister Ember and sister Mary are lying on the bed, out of breath and covered with sweat. They can’t rest too long, as they are told to put butt plugs into their asses. They only have a circumference of 20 cm (7.9 inch), but also a length of 20 cm. When they try to insert the toys, they notice that their guts struggle to accommodate both, the toys and their cum filled stomachs. It takes them so long to insert them into their sore asses, that the master continues without further waiting.

“How many loads did they swallow?”

One of the trans sisters steps forward.

“I counted 41 loads for the blond one and 43 for the brunette.”

She looks at the other trans sisters that nod in agreement.

“Make it even then.”

Two women walk over to sister Mary and make her swallow two more loads, while she is trying to get the toy in. Their stomachs already felt so full, but with the huge toy inside, they get nauseous. None of them had ever swallowed this much in a single day. But as with any good dish, too much can make you sick.

“Send the men in!”

The door opens and ten huge men walk in. Sister Mary and sister Ember slowly sit up and gaze at the giants walking in. It does not take them long to see that they are hung as well.

“It take it that you have not seen the men of the institut. Level 3 don’t have to have sex with them yet. They might get hurt. However, I did not summon them to fuck you. They just need to provide more cum to swallow.”

Two masters place a bucket between the girls and place a box with weights on the bed.

“Contestants!”

Sister Ember and sister Mary are looking cluelessly into the room, then point at each other.

“Yes, you, start sucking of these cocks and swallow their loads.”

He turns to the men.

“Everytime, a slave has swallowed your load, you take these weights from the box and attach one to each nipple of her contestant. This should motivate them to hurry sucking you off. The weights are 50 grams (1.8 ounces) each. So if a slave swallows, for example, 10 more loads now, each nipple will have a weight of half a kilo (1.1 pounds).”

He turns to the two girls.

“Contestants, this game is easy. You keep sucking and swallowing until one of you pukes into the bucket placed between you. We will need it later, so don’t miss it.”

He smiles with a wink at the two girls, who are looking around in panic trying to understand what is going on.

“The game begins…now!”

The first two men are stepping forward and the girls quickly hurry onto their knees sucking on the new cocks. Their heads bobble frantically trying to make them cum. Soon, their rapid stroking rewards them with their first huge load of jizz, as well as a weight on each of their nipples. They try to ignore their inevitable growing pain in their breasts and focus on finishing off the next man. At first, sister Mary is in the lead, until sister Ember catches up by choking herself on her dicks. They try their best to outdo each other until they teary-eyed manage to jam the heads of the cocks into their throats.

When they reach 10 loads, the many weights are exchanged for a single 500 gram weight on each nipple. They can’t ignore the pain anymore, but they won’t give up.

After 20 loads, they noticeably slow down. Each time to gulp down another mouth full, they have to take a breather for a few seconds. But eventually one of them reaches for the next cock, forcing the other one to continue as well.

After 30 loads, their exhausted breathing is constantly interrupted by groans of agony. Each one has a bulging stomach expanded by a sea of sperm. They can barely move their upper body, as moving the weights shots jolts of pain through their breasts.

After a short estimation, the master congratulates them on already ingesting more than 1.5 liters (0.4 gallons) of pure cum. They have no idea what that means. To them, it only amounts to misery.

After the 40th load, a single 2 kilo (4.4 pounds) weight is attached to each one of their nipples. Their pleasing and wailing is only met with laughter and ridicule. While they had hurried initially and tried to jerk off every man as fast as possible, the girls now kneeled there, moving as little as possible. The men showed some mercy and jerked themselves off into their mouths. The shallow breathing of the two sisters is often interrupted by coughing and belching. They can feel a build up of saliva in their mouth. Their bodies gradually ready themselves to eject.

After load 42, sister Mary has a hick-up, which causes the weights to painfully jump. She tries to alleviate that by bending forward, but unintentionally compresses her stomach. She is holding her hand in front of her mouth. Oh no, what did she do? Is that it? She is heaving, she can feel it, there it comes.

She holds onto the bucket and hurls many times streams of white vomit under a loud growling of the audience. After her stomach finally emptied itself, she collapses to the ground with the weights on her tits hitting the floor.

Sister Ember’s relief about her victory is short lived, when the stench of vomit hits her nose. Moments later, she also fills the bucket and collapses next to sister Mary.

The masters remove the weights and let them rest for a short while, while the men fetch more tools. With burning noses and throats, the girls sit on the bed, finally able to catch their breath.

“Blondie!”

Sister Mary looks up, knowing that she is in trouble now. The master holds a large funnel in his hand.

“It appears that you did not appreciate the gift we have provided to you. Therefore, we will put it back into you, but this time into your other end. Remove the toy in your ass.”

No, they can’t mean that can they? While everyone stares at her with a grin, she slowly removes the toy from her ass.

“The narrow end of this funnel goes into your ass, which allows us to empty the bucket into you. Then, we plug your ass, until you sucked everyone in this room off. Then you may relieve yourself in the toilet. Do you understand?”

Sister Mary can’t believe what she is hearing. In shock she looks at the bucket filled with their vomit.

“But, but master, sister Ember also vomited into the bucket. This is not fair.”

The master is a bit shocked by the answer, but then confers with the others. After some nodding, the murmur stops and he turns to sister Ember.

“Brown-haired slave, that is true, you did throw it all up as well.”

“But master, sister Mary vomited first!”

He nods and waves her off.

“You did better than her, I agree, but not by a lot. Therefore, you will be punished as well, but not as severely. And you will help reduce the punishment of the blond slave, as well. After all, your vomit goes into her ass as well. That much stomach acid can damage her unless we clean it later.”

“We can wash her out with some urine. But you will gather it for her, with your ass. First, we funnel the bucket into the blond one and then funnel our piss into you. And before she sucks us off, you ride us.”

A cheer goes through the room, while sister Ember gives sister Mary an evil look. How dare she get her into this mess? She doesn’t even look at her.

Sister Mary is made to stand on her head with two men holding her by each leg. The funnel is inserted into her ass and the contents of the bucket are slowly poured inside. The cold liquid enters her and slowly travels through her guts. The long funnel creates a strong pressure, causing the vomit to travel further into her relentlessly. When the first parts of her intestines are fully stretched, she starts to panic. But her flailing is easily suppressed by the men holding her. When the bucket is empty, they close her ass with a wide plug and shove her into leather panties that make it impossible for the plug to be pushed out.

When she is let down to kneel, all the contents in her bowels are shifting around inside of her. It feels like she is about to burst. After a few seconds, she holds her stomach. Pain is emanating from inside. What is happening?

“Master, what is this? It burns, my insides burn. They are on fire!”

Again, her agony is met with laughter.

“That is your stomach acid my dear. It is attacking your intestines, especially any bruised or scratched spots. Did you do anything to your ass before? Hahaha”

She slowly realizes their plan. She had been fucked ferociously in all of her holes, especially her ass. Everything was sore, now everything burns. She grunts, holds her stomach, and kneels down in pain. Her body wants to eject her bowles and pushes, but the panties firmly keep the plug in her ass. There is no way out. She has to play their game. She needs to suck them off.

She shuffles towards the next tran sister gobbles down her cock. This time, she has no weights that prevent her from moving, but she would rather have those than the fire inside her ass.

In the meantime, sister Ember is already lying on her stomach, with the funnel in her ass. People stand around her pissing into the funnel, filling her up gradually.

Sister Mary just downed her first load and approaches the next sister. However, the master steps in her way and stops her.

“Not yet. Don’t you remember? Everyone gets to fuck the brunette one first and then you suck them off.”

“But master, no is fucking her right now.”

“You have to wait until we are done gathering piss for you. How ungrateful are you?”

“I am so sorry, master. I was too stupid to realize, master.”

She steps back and lowers her head. Once he turns back to sister Ember, she resumes fidgeting around trying to deal with her pain. After what seems forever, sister Ember is filled up and plugged up, bursting with piss in her guts. They pull her up from the floor and guide her to the bed, where the first trans sister is already waiting. Sister Ember mounts her huge cock and rides her to the best of her abilities. After a while, she is allowed to stop and lets the next one lie on the bed. In the meantime, sister Mary gets to work the cock that just exited sister Ember’s pussy, whereupon she is soon rewarded with her next load of cum.

The girls work in tandem, for a while, but after 9 loads, sister Mary is falling behind. Her stomach is cramping after throwing up and now having to endure even more cum, while the burning in her ass keeps getting worse. Sister Ember is done with everyone in the room, when sister Mary is still struggling to jerk off her 18th cock.

“Come on sister Mary, stop wasting everyone’s time.”

“I… uuuuuugh … I … uuuuuuugh…”

Sister Ember rolls her eyes and walks up to the man that is next in line and starts jerking him for her. When he comes, sister Mary is shortly pulled out of her fetal position to catch everything with her mouth. Sister Ember also helps her finish the last of the men and turns to the last six people who didn’t come yet: the masters.

Sister Ember is holding her buttplug. Her insides don’t burn, but her sphincter is giving in. Unlike sister Mary, she did not get leather panties that hold the plug in, so she can get fucked in the pussy. She can’t hold it much longer. Jerking off each of the masters would take too long. She will need to gamble.

“Master, may I make a suggestion?”

The master raises his eyebrows in interest.

“It seems that sister Mary is hopelessly incapable, master.”

“Indeed, quite the disappointment.”

“But she has yet to receive your cum, master. But she can do that with her ass as well, once she has voided her bowels.”

The master smirks.

“That is a good point, slave. But will that not be painful for her? It must be agonizing, don’t you think?”

“Master, she has to earn it either way, be it through effort or sacrifice. Please, master, help her.”

Now all the masters are grinning and nodding at the main master.

“It seems you convinced us to help her then. Men, carry her to the bathroom.”

Sister Mary is dragged by her arms to the bathroom. A few seconds later, everyone can hear loud splashing of water followed by flushing. She is dragged back into the room and placed face down on the floor. After the funnel is placed inside sister Mary’s asshole, sister Ember is finally able to remove the plug from her ass and releases liters of piss into the funnel. Her moaning of relief is soon drowned out by the groaning of sister Mary, whose guts are not prepared to accommodate the new liquid. Once she is full, sister Ember inserts her plug into sister Mary’s ass and finally gets to sit down and rest.

But it is not over for sister Mary. The burning sensation has subsided a bit, but has not gone away either. They make her jump and run around, to make sure that piss washes away any remaining acid in her ass. After she finally is allowed to relieve herself in the toilet, she is told that she still has to get fucked in the ass by each master. She tries to plead and bargain, but no one shows her any mercy. When she finally lies on the bed and the first master is about to his cock in her aching and sore as, he tells her that it was sister Embers’s idea. She gives her an evil eye, but sister Ember just smiles and shrugs. Before sister Mary can voice her fury, a painful dick in her ass causes her to cry out in pain.

Six agonizing butt fucks later, the masters leave and their army of slaves leave sister Ember’s chamber. Sister Mary had passed out from the pain and was carried back to her room, where she wakes up alone an hour later. After dinner, she skips stretching her ass, but still manages to sleep plugged. The next day, she does not have to do any anal sex in order to allow her intestines to heal a bit. Her grace period does not last long, as a day later, everything is allowed again. But it takes two more days for the pain to go away.

However, all the pain and suffering are just a short lived damper for her insatiable lust. She met two of the five masters that destroyed her ass just a few days later and she could not wait to fuck and and please them.

But her resentment towards sister Ember stuck with her. She thought she had an ally, a friend. But it seems, sister Ember was right all along and every sister in here is competition. Sister Mary has to keep training, keep getting better and push herself. She stretches as much as she can and tries to make every man cum as often as possible. She needs to be able to swallow anything if she wants to succeed.

After three weeks of lactating (day 47), her milk production is at 5 L (170 ounces) per day. She sits on her bed, waiting for her next master. She tries to appear patient trying not to show how she struggles with her tits filled as if they are about to burst. When the door opens, she gladly shouts

“Good morning, keeper of my tits!”

“Wow, look at you. I haven’t seen you for a few weeks and your tits are massive!”

She holds them up to him.

“They are all yours, keeper of my tits.”

He gently brushes her leaking nipples and a few seconds later, milk is shooting in arches across the room with a shiver of excitement causing sister Mary’s body to shake. She stands up to him, hoping he would touch her more, but he guides her back to the bed. He lifts her breasts a little, trying to assess their weight.

“They are so full, my little slave.”

“Please, milk me, keeper of my tits.”

He puts her right nipple in his mouth and starts sucking. She immediately melts away in pleasure when her arousal is answered with stimulation and in relief when her tits are being drained. However, her enjoyment is short-lived as he stops soon after.

“Impressive, they are bursting with milk. You have my permission to drain them, but only without touching them. Here is a small metal bucket. Your task is to fill it with your milk. That should be about 300 ml (10 ounces).”

She tries to catch a few of the streams coming out of her nipples, but the flow trickles off, since her master stopped touching her. She looks a bit puzzled at the master, who just smirks at her. After a short pause, she smirks back at him, falls on her knees and sucks him hard. Once he is stiff enough, she jumps on him and passionately rides him. Soon after, milk starts pouring again into the cup. Her master enjoys her initiative when she pulls out his cock and inserts it into her ass. After a while she jumps down and starts choking herself with his dick in her throat. No matter what she does, her tits keep ejecting milk. His pleasure is her pleasure and she keeps enjoying herself.

She is riding him again, when she notices that her bucket has already filled. She shows him the cup, without slowing down her movements.

“Good girl. Now, drink it!”

She smiles, shrugs and downs the entire bucket.

“Keeper of my tits, let’s fill another one, please.”

Her master is stunned by her enthusiasm. He nods, leans back, and enjoys the show. Happy about the approval, she speeds up her movement and soon after cums hard. However, she does not give herself too much time to relax and jumps off him in order to open the drawer.

“I can’t touch my tits, but can you, keeper of my tits? Please?

She hands him a box of needles, sits next to him and presents her tits to him. Her master raises his eyebrows at her, gives it a quick thought and opens the box.

“Well, I only have myself to blame if you find a loophole. Come here sugartits.”

He inserts two needles into each nipple, causing her to moan every time. It takes him some time, as he has to wait for the milk to stop streaming out of her nipples.

“Keeper of my tits, may I attach the bucket to the needles? Then I don’t have to hold it anymore. Maybe you even have a second bucket for me?”

Sure enough, he pulls out a second bucket and they attach handles of each bucket onto her tits. She gleefully shakes her tits with the dangling containers, but has to stop herself, when she buckles and the pain of the weight. Once she has composed herself, she walks around and gathers the largest toys she can handle and puts them next to him on the bed. Then she walks up to his side and carefully puts herself over her master’s knees. Her legs are dangling off to one side and her head and her massive tits next to the other.

“Please, keeper of my tits. Can you make me cum or hurt me… or both? I’m sure we can fill the buckets.”

He runs his hands up her legs and probes her soaking wet pussy, followed by her puckered asshole. After a few seconds he can already hear milk flowing into both buckets. Next, he takes her dildo and ruffly jams it into her pussy. Despite being lubed up so much by her own juices, it takes him a bit of time. Sister Mary groans in pain, but the trickling milk tells him otherwise. Once her pussy is full, he proceeds to push the plug into her ass. However, once it is about half way in, it jams more and more against the dildo in her pussy. She does not stop him, but her legs are rising in order to deal with the thin wall between her ass and pussy being squeezed so tightly. Seeing how bravely she keeps fighting he does not stop and keeps pressing through her screams until the plug is forced into her ass. Her screaming subsides and after some heavy breathing, her master can hear a bit more milk pouring into the buckets. However, after some time it stops again. When nothing more happens, sister Mary starts to sob a bit.

“What is the matter, honey?”

“I can’t get out anymore. I’m trying, but the milk is not coming anymore, keeper of my tits.”

“Does the weight of the buckets hurt?”

“Yes, it does, keeper of my tits. But I don’t know how to get more milk out of them.”

“I guess we completely drain them, my slave.”

“Wait, keeper of my tits, you can blow up my tits. That might push out some more.”

He helps her get up on her feet. Her nipples are hurting a lot, but she does not care. She wants to see if she can do it. The master comes back with the gun but also brings her the vibrating toy.

“I like your resolve, honey. Here, use this while I expand your tits. Maybe it helps.”

She sits on the bed, grinding the toy against her crotch while her master is heating up her breasts with the gun. When the implants expand, they push from the inside and more milk is suddenly squeezed out her nipples. Her master keeps expanding, maintaining the flow of milk. The weight on her nipples, the pressure inside her tits, the toy against her groin, it is too much for her. Sister Mary experiences one more massive climax, which is still dying down when her breasts are fully expanded. She tries not to spill too much out of the buckets, but they both know that they succeeded.

He takes off both buckets and hands her one of them.

“Cheers, slave!”

“Cheers, keeper of my tits!”

She downs the bucket of milk and smiles at her master, with blood running down her tits and her holes painfully stretched. She catches her breath and suddenly jumps up.

“Keeper of my tits. I am so sorry, I have failed to make you cum yet.”

She drops on her knees, trying to suck his cock, but he pushes her away.

“You know what, slave? I think you have done enough for me today.”

Confused about his words, she is not moving, looking at him in shock and panic.

“Don’t worry, I mean it. I had a lot of fun today… But I think we may part ways here.”

“I don’t understand, keeper of my tits.”

“Ah, that is ok. That is not the first time for me. It is fun to break a new girl. To inflict pain, to torture the spirit. But you have evolved too much already. I’ll have to find a new girl to torment.”

“I am so sorry, keeper of my tits.”

“Don’t worry, you can call me, eh … master, I guess. I’ll go and check if there is a new girl to jizz into. Any tips? What scared you the most?

Sister Mary pauses to think for a second.

“I am the most terrified when you say nothing. I was scared for my life.”

“I like to hear that, slave. Who knows, maybe you will hear the new girl scream later today.”

“I sometimes do, …master.”

After an awkward pause he gets up.

“Goodbye, slave. I might check in again from time to time, I don’t know yet. But I definitely will pay them to pump your tits up as much as possible, don’t worry.

“Master, why do you do this to me? What is the purpose of making me carry around these large breasts for the rest of my life?”

His smile turns into a stern look.

“I had this done to so many girls that I don’t even remember. What did they look like? What did they say to me? What efforts did they make to please me? I have already forgotten it all. To me, my orders are nothing but a fleeting thought that entertained me for a moment. You are asking me for the purpose of the struggles I cause you? You search in vain.”

She does not know what to say, and can only stand there as awkward as the toys in her holes allow it. The sound of another drop of blood falling from her nipples to the floor echoes through the room.

“Hehe, thanks, slave. You were able to please me one more time with your moment of bleakness and misery. I wonder if I’ll be this lucky with the next girl.”

After the door closes, she sobs and slowly walks to her bed. Before she can sit down and gather her thoughts, the monitor beeps and announces her next master in 5 minutes. Like on autopilot, she pulls out all the needles, disinfects her nipples, and removes the toys out of her ass and pussy. She hurries to her bed, sits down, and tries to gather her thoughts. What did the master say again? He loves torturing her tits. Her nipples are sore. She touches them, pinches them, rolls them between her fingers. It feels good. She rubs her pussy. It’s so empty. She would like another cock. Her horniness returns again. She can’t wait for the next master. The door opens.

“Welcome, master, how can I please you?”

_

After a total of 52 days, sister Mary finally reaches all goals for level 4. Proudly, she shows father John that her ass can take a circumference of 24 cm (9.4 inches), a flexible dildo 35cm (13.8 inches) deep and a stiff dildo 25 cm (9.8 inches) deep. Her pussy manages a circumference and a depth of 25 cm (10inches). Like last time, she wants to have sex with father John immediately, however, this time treated to two loads of cum that she cherries as much as possible.

Afterwards, he pulls out a large syringe and injects each of her breasts with alot of some strange liquid. Then, he pulls out the heating guns again and further expands the size of her tits. Sister Mary tries to hide the fact her breasts feel a bit too tight, as she does not want to look weak in front of her beloved father John. Nonetheless, she is breathing heavily once her tits are fully expanded. He feels her breasts and checks for any complications, while she smiles with a slightly worried look.

“Perfect shape… the implants work flawlessly. We can continue like this. You are now at 1500cc, but they can be expanded up to 2100cc, as they are now.”

“Father John, how large are they supposed to be? They are already massive.”

“It depends a bit on your breasts. Your tissue is very stretchable and sturdy. So far, I don’t see much of a limit yet.”

That is not the answer she was hoping for. He cools down her breasts with water and exchanges the rings in her nipples and clit with studs. Finally, her blue ribbon is exchanged for a purple ribbon, which she celebrates with a little dance.

On the way to her new chamber, father John explains that she has access to a larger ***********ion of music and gets to choose her food for Sunday from a menu.

In the room, she finds an outfit that she is instructed to wear. It includes furry ears, long stockings with paws at the end and long gloves with paws at the end. She will have to receive every master this way and only remove it on their command.

She has worn such clothing occasionally and is already curious about a missing item. While she puts on her clothing, father John has opened a wardrobe.

“Father John, is there going to be a tail?”

“Yes, try this one.”

“Oh, that tail is shorter than the last one, father John.”

“It is 35 cm (13.8 inch) long. That is probably the right size for you.”

She gives him a puzzled look. Why is it the right size? Her eyes widen when he turns the tail around. On its other end, instead of a plug, it has a long flexible dildo. It starts with a circumference of 24 cm (9.4 inch) and tapers slightly down to a circumference of 7 cm (2.6 inch). He hands the massive toy to her and tells her to insert it. It takes her quite some time, as the toy challenges her both in depth and circumference. After she finally gets it in, she wants to stand up, but he stops her.

“No, when a master is with you, you go on all four unless told otherwise.”

She slowly goes back down to her knees.

“Will I have to walk forever on all four, father John?”

“No, there are three scenarios, where you can walk upright. The first one is, when the master allows it. The second one is when there is no master. The third scenario is when your tail still touches the floor, even when you walk upright.”

“But my tail is too short!”

“Don’t worry, there are longer tails in this wardrobe.”

He opens both doors to reveal many tailplugs hanging there, with different lengths. Inside are tails of all kinds of sizes, even longer than 1 meter. However, on closer look, she sees that the plugs are not identical.

“Wait, what is with the plugs, father John?”

“They are exactly the same size as the tails.”

She is trying to process what he is saying. It can’t be what he means.

“I don’t understand, father John. It sounds like what you are saying is…”

“Yes you got that right. Once you can fit that long dildo in your ass, you are free to move upright.”

“You mean this is even possible?”

“Certainly.”

She is absolutely stunned. She thought she had advanced so far, yet she encounters new, insurmountable goals. She does not see herself ever getting this far. He notices her resignation and puts it in perspective.

“Don’t be discouraged. Such long tails are usually worn by level 8 or 9 sisters.”

This fact does not really feel encouraging to her. She does not think that she can measure up to all these challenges.

“We are not done, there is more that you need to do.”

He speaks into his device: “Bring in the basket.”

Sister Mary is getting nervous. What other torture device could he bring in next? Whenever she thinks it can’t get any worse, they find new ways to make it harder for her. She crawls to the basket and is shocked to find…

“Awwww, father John, it is a basket of puppies! One, two, three, four, its four puppies. They are adorable!”

“They are only 1 day old. Take good care of them. You are their stepmother. Raise them and feed them.”

She already took one puppy out of the basket and pets and kisses it all over.

“Ohhh, I will take such good care of them. Of course! What food should I give them, father John?”

“Milk.”

“Oh right, they are still babies. They need milk.”

Father John says nothing and watches her not realizing yet what he meant. She is still petting the dog and looks up at him, still not understanding what he means. After he glances at her tits for a second, she can put it together.

“You mean… my milk? Can I feed them like this?”

She looks at the puppy for a while and then holds it to her left breast. The blind baby is smelling around, and stretches its head closer to her nipple. After a few licks, it latches on and starts sucking. Sister Mary is first surprised, but then pulls out a second puppy and starts feeding it with her other breast. Her face beams with joy and she wholeheartedly smiles at father John.

“Good, they accept your milk as food. I suggest you lay them on the floor and kneel over them.”

She lies all four puppies on the floor and arches over them while on all fours. They quickly latch on the massive tits hanging over them.

He speaks into his device: “Bring in the sire.”

The door opens and a huge wolf enters the room. Its shoulders alone are 1.2 meters (4 feet) high and his slow steps are accompanied by a deep and menacing growling. When he sees the puppies, he makes a B-line for sister Mary, who is still on all fours with eyes open like a deer in the headlight.

“You should show him that you are feeding his puppies.”

Barely daring to breathe, Sister Mary slowly grabs one of her tits and angles it up, causing milk to spray into the direction of the wolf. He sniffs and curiously gets closer to her. She is shaking, but has to hope that the beast understands. With her huge breasts and the massive dildo in her ass, she cannot run or fight.

The wolf sniffs her nipples, licks her nipples and sniffs the puppies. Maybe he understands that the milk is feeding the puppies. She slowly lowers her breast, allowing a puppy to latch onto. The wolf appears to calm down and sits down, towering over her and carefully observing everything. Father John calmly watches from the side.

“Sister Mary.”

She whispers back at him: “Yes, father John.”

“It looks like he has accepted that you feed his puppies. But he does not consider you a mate yet. You are not a part of his family yet.”

“How do I make him my mate, father John?”

“You mate him.”

“… How do I make him my mate, father John?”

“You heard me, sister Mary.”

She looks at him, shaking her head, hoping there was a misunderstanding. He nods back at her. There wasn’t. She is sighing, trying to think up with a plan.

Sister Mary reaches out at him, carefully touching his paw. Then she slowly strokes his front leg and continues towards his chest. While caressing, she looks over to father John one more time, hoping for a different response. He just gives her another nod. She takes another breath, gathers courage and lowers her hand until she feels his groin. However, the beast is wary and backs off, growling at the unknown milk provider.

She needs to lure him back to her. Sister Mary grabs her breast again and rubs her nipple until it sprays milk towards the wolf, who decides to approach her again. After some sniffing, he licks her nipple a bit and eventually starts sucking. Carefully she lets go of the tit and uses her hand to slowly reach for his cock again. This time, he does not back away and she can stroke him. After a while, she gets a response and a shaft extends outside into her hands until it reaches a length of 25 cm (10 inches).

This is as far as she had planned. Now she is stuck, stroking his cock and the puppies still sucking on her tits. So, she grabs his hind legs and pulls him slowly towards her face. She just stops thinking, closes her eyes and takes his cock in her mouth. The wolf is taken back for a moment, but calms down when she carefully massages his cock her tongue. She speeds up ever so slightly in order to please the beast panting above her. After having gained enough of his trust, she pulls out and gently pushes him to the side until he stands behind her.

As she can barely look behind herself, she tries to invite him by pulling up the tail, arching her back, and wiggling her butt in front of him. His panting stops and he jumps up on her, his claws scratching her back, trying to hold onto her. Without looking, she reaches around in the air until she gets a hold of his cock and guides it into her pussy. Once he is in, he gets to work and starts thrusting. The large toy in her ass tightens her pussy, making it hard to insert anything. But the beast is strong and overcomes any resistance by force.

The large beast thrusting into her tiny pussy should scare her, but she is actually relieved that he does not try to attack her. This is the first time she has sex with an animal. The wolf seems to love her human pussy and thrust furiously. It’s not easy for her, but she can take it. She likes the way he has his way with her. No games, just instinct. Her breathing intensifies and after a while, she orgasms. The wolf soon follows suit and comes inside her pussy.

The puppies had already stopped sucking, sister Mary can finally sit up and relax her back. Father John walks up to hear and hands her a cup.

“Good job. It seems the sire has accepted you as a mate. Here, try to not get anything on the tail.”

She squats over the cup and empties all the seed into the cup.

“Father John, is his name “sire”?

“No, that is what you call a male dog that is the father of puppies.”

“And what do you call the mother?”

“The mother of puppies is called a ‘dame’”.

She smiles, “So that makes me a dame then, father John?”.

“No, you did not give birth to them. You can consider yourself just a female dog, a bitch. You are his bitch now.”

She looks slightly disappointed at her new title, but her attention is then shifted to the cup, colding about 50ml (1.7 ounces) of wolf cum. She glances shortly to father John, who nods again, just as she expected. The eyes are closed, and everything goes down the hatch.

Father John then takes the wolf and attaches him to a leash that is hooked to the wall. Next to the hook is a second bed, a bit smaller than the main bed.

“Sister Mary, this is the dog for the sire and the puppies. The big bed is for the masters. You can sleep in either of them, I don’t really care.”

She crawls onto the big bed, which reminds her of the huge toy in her ass.

“Father John, what are the requirements for level 5?”

“Your ass has to take a circumference of 28 cm (11 inches), a soft dildo to a depth of 50 cm (19,7 inches) and a hard dildo up to 30 cm (11.8 inches). Your pussy has to take 30 cm (11.8 inches) in circumference and 28 cm (11 inches) in depth. As a level 4, masters can fist your ass and pussy and can piss into your ass.”

With all that information dumped onto her, he leaves the room. After a while, she remembers that she can stand now and hops off the bed. However, she quickly realizes that her sphincter and her guts are struggling while stretched so much. So she slowly waddles to the bathroom and cleans herself for her next master.

V. The level 4 of sister Mary

“Good morning master, what can I do for you?”

“Well, for one, you can shut up, because a dog does not talk.”

Sister Mary lowers her head and mutters a small yelp. She now remembers the master, it was the one that had stuffed her with balls, which she almost did not manage to get out of her intestines.

This time, she very dutifully performs all the orders he gives her regardless of how much her ass struggles. After fetching the ball three times, he praises her.

“Look how fast you have gotten. You start off so quickly. Let’s see how fast you truly are. Come here and face the wall.”

She positions herself between his legs and prepares herself for seeing the toy flung into the room. As soon as the ball goes flying she sets off, just to smash into the ground. The master had grabbed her tail firmly, causing her to trip. Her ass hurts from the sudden impact and she lies on the ground, holding her ass.

“What is the matter? Get me the ball, you dumb bitch!”

She gets back on all four and gives him a puzzled look.

“Don’t look at me. I’m not the one holding onto you. It is your ass clinging to this tail. You have to let go of this toy if you want to get the other toy.”

She breathes heavily, confirming in her mind what he wants. He wants her to rip out the toy deeply logged in her ass. Sister Mary crawls forward and pulls with all her strength, while somehow trying to loosen her ass. Her sphincter stretches and stretches until the toy pops out in one swift motion out of her ass. She collapses into a fetal position holding her stomach. The toy was folded up inside her intestines. Pulling it out so quickly caused her huge internal pain. But she can’t stay like this, she rolls back onto all four and stumbles in a disoriented state to the ball, picks it up by her mouth and somehow makes it back. She collapses again, but manages to get back into a kneeling position. She can feel that her ass still has not fully closed yet.

“Good girl, you got the toy! But what is a dog without a tail? Let’s get it back in.”

The master brute forces the tail back into her ass, gives her a slap on the cheek, grabs her tail and throws the ball again. It does not get easier when she has to rip out the toy out of her ass when she jumps to get the ball. But she bravely keeps sprinting in order to fetch it as fast as possible.

After the fifth time, he finally stops throwing it, and inserts his dick in her gaping asshole. However, instead of fucking her, she can feel her insides filling up with liquid. He is pissing in her ass. She gets to catch her breath while she is sitting still, acting as his toilet. After he is finished, he pulls out, but immediately pushes the tail plug against her ass. She can’t object, because she is just a stupid dog, so she tries to loosen her ass, trying to let the toy inside. Unlike the previous four times, he is inserting it very carefully and slowly. Not because he is worried about her, but to make sure, his piss does not accidentally seep out to the side. After minutes of working inside her ass, her anus closes around the flare of the tail plug. Her guts feel so full and sore, she barely tries to move.

“Now ride me bitch.”

Her master lies on the bed and waves her to come up. She crawls up and inserts his dick into her tight pussy, starting to grind. The master can’t help but start sucking on her swinging tits, causing her to speed up. Jumping on his cock causes the toy in her bowels to tear on her sore intestine, but grinding against her master increases her pleasure to the point where the pain can be ignored. After coming twice herself, she is rewarded with a mouthful of cum.

“Now, that is a good girl. But I think you need to pee right? I think do deserve to go for a walk, what do you say?”

She does not know what he means and just cocks her head with a puzzled look.

“I think you may like it. Let me see your tail wag. Come on, girl!”

She musters a smile and waggles the tail in her sore ass. He hands her a leash with two ends and instructs her to attach the leash to her collar and one of the sire. Then he proceeds to leave the room, to soon come back fully clothed. He takes the leash and goes out of the room for the masters.

Sister Mary is reluctant at first. She never went through the door of the masters before. She only knows the backdoor to the other facilities. However, a stern pull on the leash discards her reservations.

They walk through a fitting room and soon get to a main hall with beautiful decorations and lighting. After a while, they walk through a door and reach the outside with a nice park. She had not been outside since her rite of passage and slowly takes in all the sensations, breathing the air, feeling the grass and hearing the birds.

The master unleashes them both and lets them roam around. The sire lets off immediately, but sister Mary can only trot slowly behind, struggling on all fours, with her swinging tits and filled ass. She looks around as sees other masters going around with sisters and wolves. Most of them are roaming around freely. Her master tells her to find a tree to pee on. She walks up, pulls out the toy and releases her master’s piss against the tree. She groans from the relief and pushes the toy back into her empty ass.

After crawling around a bit more, she notices that some of the wolves have started to run to the tree and smell around. Suddenly, three wolves run towards her and wrestle her to the ground. She can barely get up, before one of them has entered her pussy. Before she can realize what is going on, another cock presses against her lips.

She tries to resist, but the animals just keep her down. When one of them starts to bite against her ass cheek, she stops resisting and starts sucking off the wolf in her mouth. Since he keeps thrusting too hard, she holds his hind legs and instead moves her head, gently massaging the large shaft. This calms him down and he allows her to please him. They stop biting her and allow her to establish a rhythm. After a while, she swallows her first load and turns around sucking of the one that fucked her pussy. In the mean time, the next wolf is fucking her pussy. With a bit more control over the situation, she gets to enjoy the fucking a lot more. Each new wolf makes her come at least once and she manages to catch almost every load with her mouth. However, she does get exhausted after a while and she does not know whether the wolves would accept that. She needs to get back to her master. After serving six wolves, she crawls as fast as she can to her master, who is just grinning at his scared dog.

“Haha, why are you sending such mixed signals, my little bitch? These wolves look for mates by marking the territory with piss. Can you blame them, when they take you up on the offer?”

She crawls behind him and cowers behind his legs. Luckily, her sire comes back to them, and they can go back inside.

Once the master has left, she chains her sire back to the wall and hears the puppies howling for more food. She feeds them lying in bed together with her sire. Her ass and pussy still hurt, but after a few minutes of resting and nipple stimulation she gets horny again. When the monitor informs her that the next master is about to appear, she gets herself ready to receive him.

Most of the masters this day make her fuck the sire, to which she happily obliges. Other than that, she gets fisted and milked a lot. For dinner, she gets her meal as well as a big bowl of food for her sire. As expected, she gets no food for the puppies and will have to feed them with her milk.

When she is stretching her holes, she notices that can already insert 40 cm of the flexible dildo in her ass, but only 37 cm of the next larger tail plug. While the tail plug is tapered, the end portion is still quite thick. That is when she realizes that she will have to stretch the diameter of her intestines deep inside as well. Therefore, she focuses mostly on the next larger tail plug, as she can effectively train her sphincter, her insertion depth as well as circumference of her deeper intestines.

When she goes to bed, she struggles with two problems: The puppies keep waking her up in the night, demanding more milk and the tailplug is incredibly uncomfortable to sleep with. She solves the puppy problem by sleeping in the bed with her family. Therefore, the puppies can just drink from her while she is sleeping. Her uncomfortable ass eventually gives up when sleep is overpowering sister Mary.

After a week (a total of 60 days), her stretching progress is limited. Her ass can now take a plug with a diameter of 25 cm (9.8 inches) and a length of 40 cm (15.7 inches), but she starts to struggle with depth. Her pussy can take 26 cm (10.2 inches), but is still stuck at 25 cm (9.8 inches) depth.

On the other hand, her puppies made quite the progress and gained a lot of weight, while their hunger scales with their weight. Sister Mary still produces more than they can drink, but their hunger is still increasing. Luckily, they can’t run yet, but they will soon need leashes.

Her master has just filled her ass with piss again and plugged her with the 40 cm (15.7 inches) tail. They go to the park again, but this time, the master guides her and the sire to a tree. However, this time he makes the wolf hold the tail while has to tear it out of her ass again. After she released all the content against the tree, the master does not let her leave and orders her to make the sire lie on his back and to insert his cock into her ass. Soon after, the entire shaft is buried deep inside her ass.

“Good girl. Now continue until his knot is in there as well.”

Sister Mary looks a bit confused. Does he mean that big red ball at the base?

“I thought those were his balls, master.”

“No, it is his knot. It allows him to cling into his bitch. Go ahead now, don’t make him wait.”

The knot already swelled to a circumference of 26 cm, which is too large for her ass. It takes her a lot of pressure to compress the knot with her sphincter until the largest finally passes through. However, when her ass tries to suck it in, her guts are struggling with the length. Sister Mary had noticed before how stiff the cocks of the beasts are. While human dicks can bend a bit in order to accommodate inside her, the one in her ass is stiff as a stick. She can’t say what the problem is, but her gasping and holding her stomach speaks for itself.

“Is my little girl struggling? It’s not the same as the flexible plug, right? Did you know that canines have a baculum?”

Sister Mary shakes her head while trying to align her body with the cock impaling her.

“It is a bone inside the penis. It guarantees that it is always hard. Isn’t that great? But it also won’t yield to your body. Your body has to yield to it.”

With her sphincter now having swallowed up the knot, she can’t pull out with only a little bit of leeway to move. After some trying, she notices that she can somehow wrap her intestines on his cock step by step by some circular movement, which requires her to poke herself repeatedly in the guts. After a long time of torture for herself, but enjoyment for the master and the sire, she can finally sit on the whole shaft.

This long procedure gave surrounding wolves enough time to sniff her out and gather around her. By the time she is done, around 10 wolves have gathered, but for some reason waiting and watching. When sister Mary has caught her breath and found a comfortable sitting position, she nods to her master. She was worried at first. But now that she is more comfortable, she does yearn for sex.

The master steps back and the wolves immediately jump at her. The first one jams his dick in her pussy and starts ravaging. The other wolves stand around at first, but once sister Mary finds a good footing, she whistles over one of them and starts sucking him off. After swallowing his load, she guides the wolf in her pussy to her mouth as well and drains his balls as well. Her hole stays vacant only for a few seconds until the next beast is mounting her.

Sister Mary loves getting fucked by all this large creates, filling her holes. After a while she can feel her sire come in her ass, which pushes her over the edge and causes her first of many climaxes. With her arousal increasing, her breasts start to shoot streams of milk. Wolves that are still waiting their turn rush over to suck out the delicious milk. They are rough with her nipples, but she loves it. However, after a while, she notices more tension on her tits. When she looks down, she realizes that they are expanding in the heat of the sun. It does not stop until the implants reach their maximum volume of 2100cc. If she wasn’t that horny, it would probably hurt. But she is too busy getting fucked to bother.

After half an hour, she starts to feel sore and full with cum, but the master presses her to serve the wolves another half an hour. Finally, he steps up to her and all the wolves disperse again. She sucks out a final load of her master and is allowed to get up. However, she points at her sire and then at her stomach, gesturing how he filled her up.

“Your ass is filled with his cum?”

After she nods, he makes her get on all four before he pulls out. He plugs her ass with the tail and they go back to her chamber, where she finally gets to empty her ass into a cup. Judging by how full it is, she estimates that he probably came four times inside of her. She empties the cup with several big gulps and her master leaves her alone.

Sister Mary learned two things today: Firstly, she needs to be careful if she is outside on a very hot day, as her tits may expand to their full size. Secondly, with some alignment she can get even stiff objects into her ass.

Her sire learned two things this day: Firstly, that his bitch prefers if he comes in her mouth. And secondly, with enough force, he can pull out her tail and fuck her ass as well. He applies both a lot more from then. Sister Mary does not mind getting ass fucked and welcomes the training for her ass, but ripping out her tail always hurt her. The sire never cared to learn that.

For the next days, the masters made the wolf fuck her ass a lot, as they enjoyed seeing sister Mary struggle with it so much. It took her two weeks to be able to take him full force. However, all the training paid off well, as she now is also able to take the trans sisters with their 30 cm (12 inch) cocks in her ass as well. However, the men with their 36 cm (14 inch) cocks were just not possible yet.

The puppies are growing faster now as well. They each gain about 350 grams (0.77 pounds) per day. Their hunger was so large that they had sucked sister Mary completely dry. This had pushed her tits to increase production to 10 liters per day. Since they are well fed, they reach a weight of 10kg (22 pounds) already after a month and can outrun their mother.

After another two weeks (a total of 90 days), she finally meets the requirements for level 5. Her pussy can take a circumference of 30 cm (11.8 inches) and a depth of 28 cm (11 inches) and she proudly struts around with her newest tail plug with a circumference of 28 cm (11 inches) and a length of 50 cm (19.8 inches), dangling already past her knees.

She passes the test and gets to fuck farther John again. After swallowing two loads, he increases her breast size to 2000cc and 2700cc when heated. Her breasts hurt after inflation, but she does not object to her modification. Instead, she has a big grin on her face, when her purple ribbon is exchanged for an orange ribbon. Happily she sways from side to side, swinging around her aching knockers.

Father John orders her to kneel and show how much she can deepthroat him. Her mouth did not receive as much practice. Therefore, she struggles to get just the large head of his shaft in her throat. Once she got it in, she pushes a lot, but can only get two thirds inside her mouth. Her red eyes are looking up at him, hoping that her attempt satisfies father John. But she only sees him shake his head. He pushes her off his cock and checks how much of his cock is covered in her saliva.

“You need to practice more. Next time, I want to fit it all in your mouth. Else, I won’t let you progress to the next level.”

She wishes the ground would open and swallow her up.

“…Yes, father John. I’m sorry.”

“Anyway, open your mouth.”

She opens her mouth, wanting to deepthroat her again. But he slaps her hands away. Not sure what he wants, she gives him a puzzled look. Angry he repeats himself.

“I said open your mouth.”

She opens her mouth and is shocked to see that father John is pissing in her mouth. Not wanting to be a further disappointment, she catches it all. When her mouth is full, the stream stops. She is looking up to him, hoping that he would say anything different than what she is already guessing. He says nothing.

She takes a breath through her nose, closes her eyes and downs everything in multiple gulps. She opens her mouth to show him that she got it all down. However, instead of praise, she is rewarded with another mouthful of piss. It starts to sink in that she will have to swallow every drop of urine he can offer her. After she gulped down her fifth load, he steps closer to her and inserts his cock into her mouth, then into her throat. She tries to help him and forces as much as possible of his cock into her face. Once he is settled inside her throat, she can feel him pissing him right down. It feels so weird. She can’t taste it, but she can feel her stomach filling. After a while he stops and pulls out, while is holding her stomach.

“From now on, masters can piss in your mouth. However, we don’t know how good your kidneys are yet. For now, you will swallow urine from only one master per day. If it works, you will have to drink more. But from our sisters and brothers you can drink a lot more. Probably three or four times per day. They have to be hydrate a lot, which means they mostly urinate water. You will see that the problem will rather be, how much can fit into your stomach. I also suggest you drink more water when you drink piss from a master, so it gets easier for your kidneys.”

Sister Mary is struggling already with drinking piss once. How can she take in so much more? Her head is spinning. But she won’t give up.

“Yes… father John.”

She walks over to her tail plug and inserts it into her ass, which had just been ravaged moments earlier. She follows him crawling to her new chambers with her family of wolves in tow. In her new chamber she is surprised by windows to the park. What a nice view!

“Sister Mary, the requirements for level 6 for your ass are a circumference of 34 cm (13.4 inches), a flexible depth of 60 cm (23.6 inch), and a stiff depth of 35 cm (13.8 inches). Your pussy has to take a circumference of 35 (13.8 inches) and a depth of 30.5 cm (12 inches). And don’t forget your throat.”

After he leaves, she slowly walks over to her bed trying to process all the new taste. She lies down, cradling her puppies, which start sucking her tits, while her sire pulls our her plug and fucks her ass.

After swallowing his load, playtime is over and she gets up to train for the evening. She does not intend to disappoint father John like that and shoves one of her shorter tails into her throat. She can has no problem inserting 12 inches into her throat, but the width is a problem. Therefore, she continues with her tapered tail plugs, trying to stretch her throat for larger cocks.

VI. The level 5 of sister Mary

The next morning she feeds her puppies, and trains all of her holes vigorously. Right before her next master, the puppies suck her completely dry one more time, just before she cleans herself and sits on her bed in order to receive her next master.

“Good morning, my little puppy. It seems that you are finally level 5.”

It’s the master that loves pulling out her tail plug. She knows she is not allowed to talk and just nods her head, while presenting the orange ribbon around her neck. After sucking him hard, she has to perform a few easy commands such as give paw, lay down, and roll over, followed by having to fetch the ball. Like last time, he holds her tail, forcing her to rip the 50 cm (19.7 inch) plug out of her ass. All her practice does not help her, since the plug is getting longer with each progress. Even when pulling with all her strength, it takes 2 to 3 seconds until the plug has traveled out of her ass. After bringing back the ball a few times, he pisses in her ass again and plugs it with her long tail. This time, she even manages to cum, while she rides him.

Once she gobbles up his cum, he orders two men inside. After sucking one of them hard, she tries her best to deep throat him, but only gets two thirds past her lips. He stops her attempts at forcing more into her throat and holds her head. A few seconds later, she notices that he is already pissing right into her stomach. Once his cock is finished and slips out of her mouth, she is already holding her stomach. It’s quite full, having to accommodate both the toy and the piss. But she already knows it won’t stop here. She scurries over to the other man and starts to force his cock down her throat. However, her master stops her.

“No, not down her throat again. That is too easy. Piss in her mouth and make her swallow it.”

She takes a few breaths and obediently opens her mouth. Swallowing is a lot harder with such a full stomach. By the time he finished emptying his bladder into sister Mary, her stomach is forcing her to burp up air, just to make more space. She wants to lay down on the floor, nauseous from her full guts. However, her master immediately makes her get up and ride the men. Each jump, she can feel the piss in her stomach slosh around. But she powers through and makes them both come. She has to bend down to their cocks in order to swallow their loads, which almost makes her stomach revolt.

Once she is done, the brothers leave and she carefully crawls down the bed where she kneels on the floor. Holding her stomach, she can feel it bulging out. She has to push her large tits to the side to see her stomach, which is protruding forward. In order to release the pressure, she gets back on all four. While catching her breath, she can hear the steps of her sire. She looks to the side and sees that her master has unchained the wolf and send him to sister Mary.

She is too exhausted to do anything. So she just takes a few breaths, lifts her tail to the side, and braces for impact. As she already experts, her sire enters her violents and thrusts without any regard for the toy in her ass or her full stomach. She groans, trying to deal with her insides while the beast is having fun. He bites her neck when he is about to come, whereupon she pulls him out of her pussy and turns around in order to catch all of his jizz in her mouth. She swallows, licks his cock clean and collapses to the ground.

While her master chains the beast to the wall, she gets to collect herself a little bit. After a few shallow breaths, she calms down a bit, but still holding her stomach and her forehead.

“That is a good girl. You got almost all of it.”

It takes her a few seconds to process what he said. Then she quickly turns her head to the master, worried about what he meant. She swallowed every drop, what does he mean?

“There is still some piss you have not swallowed, right?”

She looks to the ceiling, pondering what he is talking about. After a few seconds, she pauses and then reaches with both hands for her stomach.

“That’s right. It’s already inside of you, but from the wrong end. Time to fix that.”

He walks up to her and places a cup on the ground. Sister Mary gets back on all four, and slowly pulls on the tail while clenching her ass tightly, in order to make sure that nothing spills out too early. When almost the entire plug is pulled out, she places the cup under her ass and pulls out the toy. However, since the plug has pushed the urine so deep inside, she has to squat and push for some time, until everything is in the cup.

Unlike the brothers of the institute, the masters do not have to over hydrate. Therefore, their urine is not clear. The contents of the cup have a dark yellow hue. Sister Mary is not sure if it’s only piss, but there is no point in guessing. She closes her eyes and downs it all. It was a bit easier to swallow, as the toy was not in her ass. But the aftertaste is a lot worse than when she swallowed piss from the brothers.

“There you go. What a great toilet you are. You look quite full, right?”

She holds her stomach, but musters a smile and nods. The master picks up her tail plug and dangles it in front of her.

“… but not full enough.”

She has to fight her stomach, in order to force it in, but after enough tries and repositioning of her body, she manages to insert the whole plug back in her ass. But her guts are now revolting at every movement now.

“Now be a good girl and get the leash so we can go for a walk with you and the wolf.”

They walk and crawl in the park, where the sire is let go to roam. While he is running around, sister Mary is heavily breathing with every step. The fresh air is probably the only reason she manages to keep her nausea in check.

Once her bladder is full and she goes to mark one of the trees. Sister Mary has not felt such a relief in a long time. She still feels quite full, but she now feels better prepared for the next hour.

As usual, she sucks her sire hard, and inserts his cock and knot into her ass. By the time her ass closes around the knot, enough wolves have already arrived to fuck her. Despite having relieved herself, her stomach is still half full with piss, making it hard to swallow the many loads from her furry lovers. She still gets to enjoy herself and comes a few times. However, after half an hour, her tits start to expand in the hot sun and her own bladder fills up again. Under these constraints her body refuses her any more orgasms. After a full hour, the master allows her to finally relieve herself and they go back to her chamber, where she downs the loads her sire had shot up her ass.

Once the master has left, she hurries into the shower and cools down her tits with cold water. As her breasts shrink down to a size that was less painful, she tries to find a plan how to make it easier for her in the future. She had mostly focussed on stretching her ass and pussy, but she also has to work on her stomach and throat. She can practice her throat with the toys, but there is no toy for her stomach.

Her thoughts are interrupted by the display announcing the next master. She cleans herself up and gets ready to sit on the bed.

A few days later, one of the organizing sisters comes into her chamber, attaches a leash on sister Mary and leads her to the elevator.

“Sister Mary, a level 9 sister requests service from a lower level sister. This can apply to anyone with level 5 or above, which includes you. She gets you for an hour. I’ll pick you up afterwards.”

“What service is she requesting?”

“Pretty much anything a master can request.”

“A sister can do that?? How come?”

“It is one of the privileges of a level 9 sister. She can do that once per month. And during that hour, you address her as ‘mistress’ not as ‘sister’.”

They step out of the elevator and walk to one of the doors. As soon as it opens, sister Mary gazes into a luxurious chamber with carpets, plants, and even a small chandelier. She is so busy taking in the sights that she does not notice the woman stretching out in her cozy bed, until she hears her whistle. She looks over and sees a gorgeous woman with the largest tits she has ever seen. Everything in this room is a completely new experience for her.

“There is the little kitten. You seem quite amazed. Have you ever been in the chamber of a higher level sister?”

Sister Mary shakes her head and keeps crawling towards the bed.

“I’ll allow you to talk. It’s fun to hear young blood talk. Oh look at you, your breasts are lactating. Feed me a bit.”

The mistress lies on her bed and waits for sister Mary to dangle her breasts over the mistress. It takes her a few attempts, as she tries to clumsily get her udders past the huge tits of her mistress.

“I’m sorry, it is just, your breasts are so large, mistress.”

“They are 4000cc each. Get your head over my nipples and suck them.”

She scurries over into a sixty-nine-like position and gently stimulates her breasts, while feeding her with her own. The mistress reaches between her legs, massaging her pussy and soon reaches a climax. Sister Mary was a bit surprised how fast that happened, but she keeps sucking and licking.

Once her orgasm has simmered down, the mistress gets up and fetches a few toys. First she attaches two clamps to sister Mary’s nipples and tightens them. Then the mistress gives her a huge vibrator and instructs her to insert it in her pussy. While sister Mary struggles to get the vibrator inside, the mistress attaches some nipple clamps to her own tits and an even bigger vibrator into her pussy.

The mistress is already laying in bed, when sister Mary finishes inserting the vibrator. Once her pussy closes over the toy, the mistress presses a button on a remote and all the toys start vibrating. Sister Mary startles for a second, but quickly realizes that the clamps and vibrator started buzzing. It feels incredible. Her eyes are rolling up and she arches her back in pleasure.

“Hey kitty, don’t get carried away. I’ll let you join in the fun, but you are here to serve me. Get busy with your mouth and eat my pussy. I want to come non-stop.”

Sister Mary apologizes and gets between her mistresses legs. She gradually progresses from light touches, the broad strokes, to sucking her clit. Her mistress enjoys herself transitioning from moaning, to groaning, to shaking legs that seem to never stop. The toys also don’t spare Sister Mary, who convulses several times in climax.

After half an hour, the mistress has to push away the eagerly licking girl, reaches for the remote and switches off the toys. They are both lying in bed, exhausted and covered in sweat.

She looks at the young girl and notices her tail plug.

“How long is your tail, kitten?”

“53 cm (20.9 inches), my mistress.”

“You just got to level 5, did you?”

“Yes, mistress.”

Sister Mary reaches for her orange collar and realizes for the first time that her mistress has a metallic collar decorated with beautiful green emeralds. The mistress is removing her toys, but still notices the jealous stare.

“It took me lots of work to get there.”

“How long does it take, to get that far, mistress?”

“I needed four years. But it’s not so much a matter of time. Not every sister gets this far. Most of them get stuck at level 7 or 8. So don’t slack off. Are you practicing?”

“Yes, I am, mistress. Look at my tail. Is this not good?”

The mistress smirks, and switches the toys of sister Mary back on. She pushes her on her back and rips out the tail. Sister Mary closes her legs in pain, but opens them back up by command of her mistress. After applying plenty of lube, she pushes her fist into sister Mary’s gaping ass. Her groaning turns into moaning when the mistress starts to carefully thrust her arm in and out of her ass. However, she keeps pushing in more and more of her arm, causing her to gradually cry out in pain. Eventually, sister Mary has to beg her to stop.

“Mistress, it hurts. I can’t take it any deeper.”

“I only got in three quarters of my forearm, is that already your limit?”

“Mistress, what do you mean with ‘my’ limit? How much more of an arm can anyone take?”

The mistress pauses for a second, withdraws her hand and leans back onto her bed.

“Put your hand in my ass.”

Sister Mary does not dare to meet her mean look and does as she is told. After she manages to push her hand through her sphincter, she looks up and checks on her mistress.

“Keep going. I’ll tell you when to stop.”

Sister Mary carefully keeps sliding in her arm until her elbow barely pokes out. She looks up again, but her mistress does not even look fazed. Sister Mary has to insert half of her upper arm until she can feel a wall with her fingers. She is shaking her head in disbelief.

“You see, little kitten? And you didn’t even lube up your arm.”

“I’m speechless, mistress. I can’t fathom how deep my arm is inside of you.”

“Push up with your fingers. Then you can see it exactly. Go ahead.”

She carefully pokes upward with her fingers and gasps when her mistress’s stomach starts to bulge below the ribcage. She immediately lowers her hand, fearing that she is causing damage, but the mistress is just laughing.

“Mistress, how is this even possible? … are you alright? … are you in pain?”

“Oh dear, you are cute. How about you lick my pussy and make me come one more time? Your face is right there, isn’t it?”

Come like that? This woman is impaled through half of her body and she wants to orgasm? How is she gonna achieve that? Sister Mary lowers her head and starts licking while looking at her mistress’s face. No sign of pain or discomfort. Instead, she is closing her eyes and moaning. Sister Mary eats her out as pleasurable as she can until she can feel her sphincter clench her biceps. All the flesh surrounding her arm is shivering as the entire body is exploding into an orgasm with sister Mary right in the middle of it. Once the climax has simmered down, she wants to retract her arm, but her mistress holds onto her.

“Not so quick. While you are here, you may as well be my toilet. Don’t get a single drop on my bed, do you understand?”

Sister Mary nods and presses her lips against her pussy. In her position she can’t gather the piss in her mouth, so she sucks it right out of her mistress and downs it in quick gulps. In the meantime, she can feel on her arm that the pressure in the guts is decreasing while the bladder is getting smaller. Afterwards, she licks her mistress clean and finally removes her arm from her ass.

The hour is over and she is escorted back to her chamber, in her small plain chamber. The room of her mistress was so much better. The mistress was so much better. Her breasts were so large, her lust was insatiable, even her sphincter was powerful… Can she even achieve that? It seems not everyone can, according to what she said. She tries to make a list of things she needs to train, but her next master is announced before she can even complete it.

After a few days, the limit of masters that can piss in her mouth is increased to two and soon after to three. She keeps pushing herself to drink as much as possible and even encourages masters and brothers to relieve themselves in her. She also drinks more water in order to stretch her stomach. Her hard work pays off, as she eventually can guzzle down two full bladders without feeling nauseous. She can almost deepthroat the entire cock if the sisters, but she is still struggling with brothers.

She also trains her pelvic muscles and sphincter a lot more, which shows soon, when her master’s notice the tightness of her holes. But, her muscle strength slows down her stretching a bit. Therefore, it takes her a few more weeks (a total of 125 days), until she finally meets the requirements for level 6. Her ass can now stretch to a circumference of 34 cm (13.4 inches), with a flexible depth of 60 cm (23.6 inches) and a rigid depth of 35 cm (13.8 inches). Her pussy can take a circumference of 35 cm (13.8 inches) and a depth of 30 cm (11.8 inches).

When she gets to have sex with father John for her promotion, she tries to take him all in her pussy, but gets her cervix annihilated instead. Her cunt gets some mercy when he plows her ass for a bit. All the pain is completely forgotten when she finally gets to enjoy his full thrusts in her backside, now that her ass can fully take his entire length. It doesn’t take her long until she trembles in climax while he pushes it all in. With a deep groan, she pulls him out of her ass and deep into her throat. As much as she would have liked to surprise him with a full deep throat, she is just missing another inch between her chin and his balls. Despite her shortcomings, father John does not deny her a load right down her throat. She manages to squeeze two more orgasms out of each of them before he stops in order to maintain his schedule.

Afterwards, he leads her by the leash to her new chamber, which is larger, provides a fruit basket, more music ***********ion, a bigger bed, and even a bathtub.

He injects another 500cc in each chest, totalling now 2500cc and 3300cc when inflated. Her skin can deal with the stretching, but sister Mary is struggling with the pain. Father John instructs her to get her knees and, whereupon he shoves is cock down her throat again. Her initial attempts at fucking her own face with it is stopped when he holds her face to piss into her stomach again. Once he is done, he stays inside her, removes the orange ribbon and attaches a stretchable metallic bronze coloured collar. Sister Mary tries to look happy, but since she has not breathed in a while, she rather be able to take out his cock for a second. However, father John holds her head firmly.

“The requirements for level 7 is that your ass has to take a circumference of 38 cm (15 inches), a flexible depth of 70 cm (27.6 inches) and a rigid depth of 40cm (15.7 inches). Your pussy has to take a circumference of 40 (15.7 inches) and a depth of 32 cm (12.6 inches). Do you understand?”

She nods very quickly and tries to push against his legs, but her head is firmly locked in place by his strong hands.

“Also, sisters and brothers can now choke you, until you lose consciousness. They can use their cock, or their hands or arms. Don’t worry, they are trained and know how to not cause permanent damage.”

Sister Mary starts to panic and tries to pull herself away. Once she realizes that she cannot win against his strength, she tries pleading with him. All she can do is look into the face of the man who is denying her air to breathe. He looks into her blood-shot eyes and shushes her.

“We used to allow masters to do it as well, but they are not as well trained. As a result, we lost some good sisters… I think you are turning out to be a good sister as well. So I have to protect you.”

While he says these words, her eyes roll up and her body goes limp. A few more twitches later, and her head slides off his cock. He checks for a pulse and then leaves the room.

A while later, she wakes up in her bed, feeling a slight pain in her lungs. It is already evening and she will have to do her physical training soon. The few minutes of time she has, she cuddles with her little puppies, which eagerly start sucking on her tits again. They are over two months old, each already weighing 20 kg (44 pounds). They all together now have more mass than their mom. She can’t even imagine how much more mass in milk they had sucked out of her. They demand so much love and pets, which she tries to provide whenever she can. They can already zoom around the room and require leashes, just like the sire behind her who has already started fucking his bitch.

After the training and stretching, she runs a bath in her new tub and relaxes for half an hour in there. She enjoys the bath so much that she continues stretching with toys and masturbates herself to many more orgasms.

VII. The level 6 of sister Mary

When the door opens, her owner comes in again. Just like last time, she performs tricks and has to rip out her now 60 cm (23.6 inches) tail plug a few times. Afterwards she has to swallow loads and piss from two brothers and swallow piss of her master that was sealed in her ass with the tail plug. She had trained her stomach a lot and no longer experiences nausea, albeit moving still is difficult with a full stomach. She gets herself ready for round two when she deepthroats both brothers just to realize that the second one does not withdraw after shooting his load down her throat. It is happening again. She is trying to let it happen, to just power through getting choked. But her body still puts up a fight. But just like last time, she is held down helplessly while her body fails to stay conscious.

When she wakes up, she finds herself lying on the floor not able to move. Her arms are tied behind her back, her legs are tight together and her ankles are tightly connected to a collar around the neck. Once she shows some signs of life, a buzzing starts between her legs. A vibrator is stuck between her legs and firmly pressing against her crotch.

“Wakey, wakey, my little puppy. Let’s play a game. It is a puzzle and you will have to find a way out.”

After trying to move, she can only barely manage to rotate her body. When she looks around, she sees that there are wires attached to her nipple piercings that lead to a heavy box on the table. There is a key on the box! But how can she get it? With only her toes being able to move, she resorts to rotating her body until the wires are pulled taut. However, her toes are too weak to rotate herself any further. She looks over to her master, but he just shrugs.

“Oh I can’t help you. I don’t know if there is anyone else that can help you…”

She looks into the room hoping to find the brothers, but they have already left. The only thing else wandering around in the room is her sire. Wait, he is unchained? Was that the master? But the wolf cannot reach for the box. She can’t even call him over, because the master says that puppies don’t speak.

After a while of wiggling around, the wolf comes closer to her anyway. Maybe if she looks at the wires, he will understand that he should pull on them. We wiggles her eyebrows and tries to gesture with her eyes, while the wolf is observing her. Her sire looks at her for a while and then stands up. Did he understand? Will he help her? Such a good boy! No, why is he walking away from the wires? What is he doing?

Suddenly she can feel him jerking on her tail. No, it’s not the time to fuck her ass. She clenches her ass, keeping the plug in her while the wolf pulls more and more, until he starts pulling her by her ass along the floor, until the wire on her nipples are pulled taut again. Sister Mary lets out a scream of pain, being pulled apart by her sphincter and her nipples. Her sire is startled, lets go and runs away.

She glances over to her master, who has a huge grin on his face. So that is how she is supposed to get the key. But it hurts. And her sire just ran into the other side of the room. She wiggles her ass trying to lure him back. Only after she also moans does she get his attention. He walks up and grabs the tail again. This time, she has to be silent. Don’t scare him away. Clench that ass and don’t let him pull out the toy. He keeps pulling harder and harder while sister Mary clenches her teeth trying not to scream as the wires yank on her nipples. Since constant pulling does not help, the wolf now resorts to individual and forceful jerks. Just as she is about to shoo him away, she can see that the box gradually shifts with each of his strokes. Not only are her nipples hurting, her ass is running out of stamina. Just as her sphincter was about to lose the battle, the box and the key fall to the floor, scaring away her sire.

She can see the key, it’s just across the room. But, she can’t walk over there. She barely managed to get the box by having the sire pulling her … oh no, she needs the sire again. But he would only pull her away. Instead, she first rotates her body so that her ass points towards the key and then she starts wiggling and moaning until her wolf starts pulling her again. Her exhausted sphincter can barely hold onto the toy and just lets go once she finally has the key in her hands. However, since her body is folded up, the toy can only slowly and painfully travel out of her guts. Seeing that her ass can finally be unplugged, her screaming does not stop the beast anymore. Before she can even start to unlock her cuffs, he is already fucking her ass. His thrusting makes it impossible for her to operate the lock. So she waits for him to have his fun. When she takes his cock in her mouth to swallow his load, she can see another key attached to his tail. She quickly tries to undo her handcuffs in order to reach for it, but she is too slow. By the time her hands are free, the sire is already lying in his bed.

Suddenly the door opens and five more wolves are let into the room. Sister Mary only barely manages to get onto her feet. But since her collar is still attached to her ankles, she is forced into a crouched position with her chin against her knees. As a result, she can’t do anything against all the wolves taking turns fucking her ass and coming into her mouth. It takes her a while to realize that each one of the wolves has a lock attached to their tails. When one of them tries to come into her mouth, she manages to reach it, but she can’t open it. After her fourth mouthful, she realizes that they have different colors: red, yellow, blue, and green. Wait, wasn’t the key on her sire blue? It probably unlocks the blue lock. But she doesn’t have the key. How can she get the key? She tries to waddle over to him, but her weird position seems to scare him so he runs to the other side of the room.

She will have to suck him off again, doesn’t she? But she can’t call him either. So, she waddles back to the middle of the room and starts wiggling her ass, hoping to lure him back. Come on, sire, fuck your bitch in the ass. Who is a good boy? I’m right here. One of them takes the invitation and starts fucking her. Is it him? Who will it be? No, it’s the red lock. Ok next one. No, the blue lock. Oh no, that would be the lock that fits the key. Darn it. Finally her sire shoves his cock down her mouth. While she massages his shaft with her tongue, she reaches for the tail and finally obtains the blue key.

Now it is back to playing roulette. She repeats her seduction dance five more times, until she can finally suck off the wolf with the blue lock. She opens it and gets a red key. Ok, so she will have to go through all of them. But her stomach is getting full. It is still holding all the piss from the three men and now she keeps swallowing wolf jizz. It also does not help that her crouching position is compressing her stomach. The only thing that is helping her is the toy on her crotch that keeps making her come while getting fucked.

After four more loads, she can finally open the red lock to get a green key. The yellow key is finally in her hands after gulping down jizz five more times. Her stomach is fighting back and her ass is getting sore. Three more times and she finally has the key to her collar. The chain is released and she tries to stand up, just to immediately crouch down again. The vibrating toy is attached with a small chain to her clit piercing and fell into the chain, when she opened her legs. After she recovered from the pain, she switches the toy off. At the same time, the box makes a beeping sound.

“Hey puppy, you did well so far. So, I’ll be kind and give you advice. You just switched on the electrification of the box and the wires. If you touch them, you will get shocked. But, you can deactivate it, if you place the toy inside the box.”

Sister Mary is still crouching, looking at the box, the wires and the toy. But she is chained to the toy. And the box is closed. How can she open the box without touching it? Maybe, she can use the tail as isolation. She picks it up, just to be stopped by the master.

“Stop, puppy. You are smarter than I thought. But no, you are not allowed to touch the box at all. Put your plug back in your ass.”

She shoves it back in and slowly gets up, while holding the toy in her hand. When she stands, she looks at the wires hanging between her nipples and the box. She looks over to the master who is confirming her suspicion with a grin. She yanks her upper body back, pulling the box towards her. The wires are not attached to the lid, but to the bottom. She cannot just pull it open, she has to throw the box around until the lid opens by chance. However, since her ankles are still shackled together, she can only shuffle or hop around, causing her to tumble a few times. After jumping around for a while, all the while tearing on her nipples, she realizes that she needs to jump over the box. With a first jump, she manages to turn the box on its head. However, when she jumps back, she accidentally touches the wire, gets shocked and unintentionally lets go of the toy again. She drops down on her knees in pain, holding her crotch and wanting to hold her equally hurting nipples. However, her pain is not in vain, as when she looks over, she can see that she finally managed to open the lid.

She steps closer and dangles the toy over the box. However, the lid and the ankle restraints make it difficult to get close. Not finding any good solution, she just drops on her knees and accepts the electric shock right through her clit. Miraculously she manages to control her shocked body in just the right angle to place the toy inside the box and the shocks stop. A mechanism of the toy releases the chain and she can finally roll to the side.

When she gets up, her ankles are still shackled. But there are no more keys. What is she supposed to do now?

“Are you guessing where the last key is? You just have to look inside of you. The key was there all the time.”

The only thing that is still inside of her is the tail plug. She reaches for it and looks at her master, who is nodding at her. She pulls it out and notices that she can still feel something inside of her. Very deep inside of her. She touches her stomach and feels a slight bump.

“Do you remember when we put the balls in your ass and you couldn’t get it out anymore? Let’s see if you can do better this time?

There is still a ball in her? When did he put it inside of her? Right from the start? Why did she not notice it? After checking the tail plug for a while, she notices that it is a bit shorter than usual. He put in the ball and then shoved it 50 cm (19.7 inches) into her ass? How is she supposed to get it out?

She squats down and tries to push with her guts, but it does not budge. As fear starts to set it and she reaches into her own ass, trying to reach anything, but her arm is too short. More squatting and pushing does not help and she starts to sob, while the master is laughing at her misery. What did she do last time? Oh the other master told her to suck in her stomach. Maybe that can help.

Like last time she lies on her back and breathes out, followed by sucking in her stomach. With her belly full of piss and cum it is a lot harder, but she manages to hold onto the ball protruding through her skin. After trying to push it down, she notices that she can move it to the left and right. Which direction should she take? If she goes the wrong way, she will push it even deeper. How should she know what her intestines look like? Did she ever see them? Of course, the mistress! When she fisted her deeply, she saw her hand protruding on the right. For her, that is her left. She must go left! After a bit of pushing the pull around, it wanders upwards close to her ribs and then suddenly downwards. That is it, it is going the right way! She gets up and starts squatting. The ball is slowly moving through her colon and finally pops out her ass. Quickly, she opens the ball and finds a key that allows her to open her shackles.

After breathing a sigh of relief, she puts the ball back together, puts it in her mouth and crawls over to her master, whose jaw had dropped seeing her achievement.

“Well, I’ll be damned. I did not think you could do that. I paid a medical team to stay ready to … well, nevermind. You are a very good girl.”

She sucks him off one more time and then he leaves her alone.

The next few days, rarely any master pushes her to her limits and she enjoys herself most of her time. Sister Mary is so happy that she can now take the sister’s cock full strength. One of her master’s treated her to a long orgy with five sisters, during which she lost count of how many times she climaxed.

Whenever she can show off her skills, she loves to be the center of attention, especially when she is serving several masters at the time. However, she sometimes gets to watch from the side lines.

She is sitting on her bed, eagerly waiting for her next master, when an organizing sister comes in instead, asking her to come out. Outside, she can see several other sisters of different levels, but all at least level 6. The group keeps collecting sisters until there are a total of twelve. The organizing sister huddles them together and starts explaining.

“The masters have requested a competition between three trans sisters, in which they have to gather points in order to win. They get points by climaxing, by making brothers come and by making sisters come, which is the twelve of you. Initially you will be assigned in groups of four to one of the tran sisters, who will fuck you until you come. There will be a basket of balls behind each competitor. After you climax, you take a ball out of the basket and shove it up the ass of the sister that made you cum and then switch to the next one. This allows you to eventually get fucked by all of them, making it a bit more fair.”

One of the girls asks: “Should we get fucked in the ass or the pussy?”

“Whichever hole gets you off more quickly. But don’t suck them off or swallow their cum. That will be collected for the loser. Once all three trans sisters can’t take any more balls, their asses are emptied and we will be joined by brothers that fuck the competitors. If the competitors can, they will continue fucking your girls as well. There is probably gonna be a lot of thrusting, so be careful. Any questions?”

“…”

“If there are questions later, you come to me. Ok, then let’s get going. The masters paid a lot for this, so don’t ruin it.”

They reach the chamber and wait outside the door, where they can faintly hear the masters announce the game to the clueless trans sisters. Once the explanation is over, the organizing sister can hear them yell “get in the sister!” and the door opens.

Sister Mary steps inside and goes to the second bed as instructed, where is the last in the line. Judging by the gold coloured collars of the trans sisters, they are probably level 8 and probably very experienced.

Once the starting signal is given, sisters from each line jump onto a bed and guide the cocks their pussies just to get immediatealy fucked. Sister Mary is first a bit shocked about how fast everyone is. But seeing the trans sisters going to town excites her. The room is filled with groaning and moaning while the masters cheer. After about 4 minutes each of the sisters reach their climax, just to be immediately pushed off the bed to make space for the next sister. Sister Mary watches as the first one is shaking on the floor enjoying her orgasm, whereupon she gets up and reaches for a ball behind the basket. She is surprised to see that each ball has a diameter of 5 cm (2 inches). She goes to the back of the sister that is already furiously fucking the next one and pops it in her ass. The competitor is just pausing for a second, groans until it is inside and continues.

After about 4 minutes, the next sister is thrown to the ground while she is experiencing her orgasm. Sister Mary is gazing onto the bed in front of her, where a woman is ravaged by another woman, thrusting mercilessly into the fuckmeat for the sake of getting another point. And she can’t wait to be next, feeling her loins are shivering and craving the same treatment. The sister on the bed is starting to scream, she needs to get ready.

With bouncing tits and spread legs, sister Mary jumps onto the bed, grabs the shiny cock and guids at into her pussy. With not a moment of hesitation the thrusting begins, conjuring a cross-eyed smile onto her face. To the left and right she can see two other sisters getting drilled, but when she looks back up, the woman pleasuring her is clenching her teeth under exhaustion. However, once the powerful woman notices sister Mary’s concern, she smiles and winks at her. Smitten by her lover, sister Mary is pushed over the edge, building up an orgasm after only 2.5 minutes. She starts screaming and is pushed off the edge. After catching her breath, she puts another ball into her lover’s ass and hops and skips to the next line.

After half an hour, all three participants show signs of exhaustion. Each of them already came four times, filling a jar with a total of 180 ml (6 ounces) of cum. With each satisfying about 8 women, they had at least 12 balls in their backside. Despite having just fed the puppies, with all the arousal sister Mary’s breasts are already spraying milk, which was eagerly gobbled up by the participants, who were dehydrated from all the exercise.

After a total of one hour, the jar is filled to 320 ml (10.8 ounces) and the asses of the participants are filled with 20 balls. The competitors have to pause from time to time in order to push the bunched up spheres further deep inside. At 30 balls, they struggle to clench their asses up. Sister Mary is mesmerized looking into a gaping abyss, into which she needs to push another one of her balls.

The first competitor surrenders at 35 balls. Her ass is permanently gaping, her sphincter pushed ajar by orbs interlocking in her colon. She even manages to push another ball through her asshole, but she can’t close the sphincter behind it, causing the ball to just fall out again. Under applause, her balls are tallied up to her intermittent score of 35 points. Soon after, the other competitors call it quits at 36 and 37 balls each.

The masters now call in the 12 brothers for the second part of the competition. Moments later, sister Mary is laying on her back, getting fucked by the cock of a competitor. But the thrusting is mostly done by the man that has his cock balls deep in the competitors ass. Sister Mary is initially scared by the large bodies moving above her. But it does not take her too long to get into the groove and chimes in with the rest of the moaning in the room.

The men not only help the trans sisters with thrusting, but pretty quickly fill up the jar as well. Three and a half hours into the competition, its content exceeds 3 liters (0.8 gallons). However, everyone is spent now. The loser has given up at 82 points and the other two fight it out a bit longer until the winner is announced with 91 points over 88 points.

By this point, sister Mary is already attending to one of the masters who claims the rest of the milk after seeing her feed the competitors. She is eagerly riding his cock in her ass while she gets to see the conclusion of the competition.

The loser is tasked with drinking the entire jar, while the second place gets a bucket with half the amount of piss collected by the masters. To sister Mary’s surprise, the competitors take it in good fun. The winner herself even voluntarily drinks a quarter of the cum jar while the crowd is cheering. Once both jars are empty, the competitors join the masters for some talking and fucking. With the masters now occupied otherwise, sister Mary and the other girls are escorted back to their rooms.

The puppies are already eagerly waiting for the food and the sire for his bitch. While her tits get sucked and her ass gets fucked, she ponders about the competition she saw. It seems the higher the level is, the less agonizing it becomes. Now that she is thinking about it, she realized that compared to her earlier days, she receives less cruelty and more praise. She gets to enjoy herself a lot more and not just due to her increased arousal, but also due to the way the masters treat her. She wants to reach a higher level, but is worried about getting stuck at level 7 or 8, like the mistress had said. There is only so much time in the day to train, but she does not plan to give. Her hand is tenderly stroking the sire under the chin.

“That is a good boy. Keep fucking your little bitch. Her ass wants to pass level 7.”

With her hard work she manages to continue improving. Soon, she manages to take every brother’s 36 cm (14 inch) cock in her ass, a success she gets to celebrate with an extensive six men orgy over two hours. There, she was also able to show off that she can deepthroat any of them, earning her applause, cum and piss.

On another day, she was tasked to serve beverages at a sports game. Another sister had to serve cold cans of beer, which she had to carry around in her pussy in ass. Luckily for her, she was only filled half the time as she had to run between the fridge and the masters lounging in chairs. Sister Mary did not have to deal with cold beverages. Instead she was providing wine. However, she was given a magnum bottle with a circumference of 36 cm (14.2 inch) and a height of 47 cm (18 inches). She only managed to get in two thirds of it, which was just enough for her sphincter to partially close around it, lodging it firmly inside of her. Walking was not just difficult, it kept pushing the bottle even further inside. However, even her well trained anus was getting exhausted supporting the 3.5 kg (7.7 pounds) for so long. Luckily, after an hour, the masters were to drunk to care about the game anymore and resorted to fucking their little slaves. When they extracted the bottle from sister Mary’s exhausted and stretched ass, they jumped at the opportunity to see how far they could fist her. Everyone took their turn, verifying that she can already take a male arm up to the elbow. After having had the chance to get some rest from the bottle, she was able to enjoy herself a bit more and showed off by climaxing twice with someone’s arm up her ass. At the end of the event, they gave her the bottle as reward, which she politely carried back to her chamber, once they inserted it back in her ass.

She keeps up the work and after a total of 170 days (or 5.5 months), she passes the requirements for level 7. Her ass can now take a circumference of 38 cm with a soft length of 70 cm (27.6 inch) and a hard length of 40 cm (15.7 inch). Her pussy can take a circumference of 40 cm (15.7 inch) and a depth of 32 cm (12.5 inch). After taking father John fully into her ass and throat, she tests her pussy as well, just for her cervix to receive another reality check. But it does not stop her from coming four times, until she downs her third load from him.

Afterwards, she is led to the surgery room again, where her implants are replaced by larger implants that each have a volume of 3000cc. Still dizzy from the sedative, she now receives a silver collar around her neck.

While holding onto his arm, they slowly shuffle into her new chamber, which has carpets, a vase with flowers and paintings on the wall. While she wanders around her beautiful new accommodation, father John lists down her new targets.

“For level 8, your ass has to be able to take 42 cm (16.3 inches) in diameter and 80 cm (31.5 inches) in soft depth and and 45 cm (17.7 inches) in hard depth. Your pussy needs to be able to take 45cm (17.7 inches) in circumference and 33cm (13 inches) in depth.”

“Father John, I have heard that not everyone manages to get to level 8 or even 9. Is that true? Do you think I can make it?”

“Yes, that is true. A few sisters never managed to get past this level. But I would say that the majority does. But many of them stay level 8 for the rest of their life.”

“For the rest of their life? How long have I been here again, father John?”

“A bit under half a year. I have to admit, you are doing remarkably well. You are still 18 years old and already level 7. You are not the first one to do this, but it is rare. I expect you to do well.”

“Yes, father, I will!”

Sister Mary can barely contain her excitement. Just a few months ago, she was scolded for her incompetence with a 10 cm butt plug and now she has increased the circumference by almost tenfold.

“One more thing. Starting with level 7, you get a daily ration of this pill.”

“What is it, father John?”

“It is a mix of substances containing mostly drugs such as gamma-Hydroxybutyric acid and Methyl​enedioxy​methamphetamine. The contents are slowly released over 9 hours.”

“What does it do?”

“It provides a sense of euphoria and increases sexual desire and stimulation. It is optional. You are free to take it or not.”

“Oh… that sounds great! I thought it would be another difficult task to overcome… It is optional? … How many of the level 7 sisters decide to take it?”

“Everyone, without exception.”

“Oh, then I’ll take it, I guess. When should I take it?”

“Try eight o’clock in the morning. That way, it should be under the effect during all your time with the masters. But wait until tomorrow, not right after the surgery. Also, no torture for your breasts for two weeks. You heal quickly, that should be enough time. Breastfeeding is fine, but we will start the weaning process. You will be provided with food to give to the puppies, which will therefore require less milk. In maybe a month, they can be released in the park with their sire.”

With that, he leaves her alone. Her excitement about her new room is dampened by the news that she will have to leave her little wolf family. Instead of trying her new comfortable bed, she shuffles over to the wolf bed and snuggles with her puppies, while fucking her sire. She drains his balls three times in a row, savoring the limited time she gets to enjoy his cock.

VIII. The level 7 of sister Mary

The next morning, sister Mary is so excited to try out the pill. When she finally takes it, she is a bit disappointed when she does not feel any immediate effect.

At nine o’clock she sits on her bed, waiting for her first master. To her surprise, it is father John that comes through the door.

“Father John, is everything ok?”

“Did you take the pill?”

Her giddy smile tells him the answer before she says it.

“I did, and I feel good. Why do you ask, father John?”

Much to the surprise of sister Mary, he starts undressing himself.

“I want to make sure that the dosage was not too high. Let’s compare sex between today and yesterday.”

She is biting her lower lip in anticipation and wiggling her legs while he walks towards her.

“Oh, father john, if you had told me yesterday I would have definitely taken the pill.”

“That is why I didn’t tell you.”

He shoves his cock in her mouth and fucks it ferociously. She gets to breathe two minutes later and is thrown on her stomach, for him to rip out her 70 cm tail plug. Without any pause he ravages her ass with full strokes, while pressing her face into the bed. Sister Mary is in heaven. After a few minutes of groaning, she experiences a powerful orgasm that she had not felt in a long time. Her well trained sphincter clenches hard on his cock while her legs are shaking, but cannot stop his cock from thrusting. Not long after she gets to swallow his first load.

Afterwards he switches through all her holes, he makes her cum a total of five times and throws her back onto the bed, a little out of breath.

“Ok, the dosage seems fine, maybe a bit too high. We are going to lower it a bit tomorrow. How are you feeling?”

Sister Mary stretches out on her bed with a smile, though also out of breath.

“I like it so much, father John. It felt better, but the pill does not change sex too much. Are you sure you want to reduce its effect?”

“Yes, while many masters love sexually hungry sisters, some masters appreciate genuine desire that is not altered by drugs. It is a rare privilege at higher levels. If you want a stronger pill, you need to ascend higher.”

“I’ll keep practicing then, father John.”

“You should, sister Mary. Now that your body can take so much, masters will be allowed to use machines on you.”

“What do the machines do, father John?”

“Most of them restrain you and fuck you with moving dildos. They don’t respond to pain or reasoning, so they are used once a sister is trained enough to not get hurt. Some of them cause pleasure, some of them pain, often both.”

He checks breast implants one more time, concluding a perfect success and leaves her alone in her room.

A few minutes later her first master comes in, wheeling in a machine with two larger horizontal dildos. The foreplay entails her sucking him hard and massaging his cock with her large tits, whereas he fists both holes and pisses down her throat.

Afterwards, she has to sit on a saddle of the machine and bend forward with both her legs and arms bound down. Once he makes sure that she can’t move anymore, he switches on the machine, causing the saddle to vibrate and the huge toys taking turns fucking her deep in her pussy and ass. After overcoming the initial shock, sister Mary soon adapts to the rhythm and starts to enjoy the machine.

Her master rolls her towards the bed with her mouth on his cock and instructs her to suck him off. She puts all her focus on pleasuring him, but is unable to ignore the machine going to town on her crotch. After about 2 minutes she has her first orgasm, followed by the next one a minute later. Waves after waves overcome her while she tries to get off her master. Once she finally manages to come, he presses a remote and the intensity of the machine is increased.

“That is a good girl. That was the first one, two more to go.”

She understands her task and resumes sucking him hard again. Sister Mary can initially handle the stronger stimulation, but starts to feel sore. She has been fucked at such a pace before, but humans usually get exhausted. The machine can keep the pace forever. Her body helps her by firing out more orgasms, but not at the same frequency as before. While the machine is still full of energy, the cock in her mouth is barely getting harder. But she knows she has to keep going and after half an hour, she is rewarded with her second load. The master pulls out his cock and gets dressed.

“Good job again, but I need a break, honey. I’ll be right back, just let me get some fresh air. But first…”

He gets his remote and sets the machine to a higher level. Load groans fill the air, while sister Mary tries to handle both her holes getting destroyed by the massive dildos. Luckily, the master can get some quiet peace when he steps outside.

He goes down the hall to a shop for some snacks and takes a walk to the park, where he watches some sisters getting railed by wolves. Oh look, over there is a sister that can walk upright, because her tail is long enough. He talks with her master and is allowed to fist her ass for a bit. Then, he goes back inside and washes down his snack with a beer. Ah, there is father John, let’s shake his hand. Great job on the tits of the sister, they look amazing. Yes, he is having fun with her. Oh, father John is busy, well, time to get back to the slave anyway.

When he gets close to her chamber, he can hear that the groaning has turned to screaming. The machine is still going at the same speed. Ignoring her screams, he calmly undresses and sits down at the bed, where sister Mary immediately takes in his cock and desperately tries to make him come. The fresh air seemed to help a bit, but it takes another agonizing 15 minutes until he cums into her mouth.

After shutting off the machine, the dildos are retracted, but he keeps her strapped in, so her sire can get a go at her. Oblivious of her pain, he fucks her as hard as usual and enjoys cumming in her mouth three more times.

After the need is done, the master jams the tail plug back into her aching ass and releases her from the machine and leaves.

Just like last time when her breasts had to heal, her masters focused a lot more on her pussy and ass for the next two weeks. At least once a day, someone used a machine on her. Her holes gradually got used to it, but there is only so much training that can prepare for an hour of constant thrusting.

However, not every machine was just an extended fuck session. Some of them were even puzzles.

One one day, after making her master come two times, she gets to fuck a brother. However, when she deepthroats him, he chokes her out with his cock in her throat.

When she wakes up, she finds herself strapped onto a machine, unable to move. Once the dizziness fades, she realizes that she is sitting on a saddle, leaning forward onto a metal box with two holes, into which her tits are extending. Her hands are locked behind her back. She tries to pivot her pelvis, but quickly stops when she notices that it pulls on her clit piercing, which appears to be attached to her seat.

“Ah, my little slave is awake.”

She looks to the left and sees her master, lounging in a chair. He presses a remote, causing the seat to vibrate pleasantly under her pussy.

“Let’s play a little game. Your arms will release when you have cum 5 times. The machine will start soon driving a flexible dildo into your ass at a pace of 5 cm (2 inches) per minute. What is your current maximum in depth?”

“About 72 cm, master.”

“That means that you will reach your limit in 15 minutes. So you better, hurry.”

He presses his remote and she feels a dildo pressing against her ass, very slowly. Sister Mary does not lose a moment of thought and closes her eyes, focusing on the vibrations from her seat. Don’t think about getting pierced through your ass, just come. The two orgasms are reached after two minutes already, but her body slows down afterwards. After five minutes, the dildo is 25 cm (9.8 inches) inside her ass, but she comes only the third time. Her fear of the machine progressing without stop, makes it hard for her to relax. She gets a fourth climax 2 minutes later, but only at minute 10 can she push herself to the fifth one. The toy is now 50 cm (19.7 inches) inside her colon and only now are her hands released.

She tries to get up, but her tits and her crotch are still stuck to the machine. With her hands, she feels around the box that is holding her tits, until she finds a number pad. She needs a code. Where is the code?

“Maybe that jar over there can help. You are a bit behind, so hurry.”

The last 10 minutes she had already seen a glass jar to the right of her filled with 1.5 liters (0.4 gallons) of cum, but did not know what she will have to do. Now she sees that there is a straw extending out the top. Having a good idea how these games go, she grabs it and starts drinking as quick as possible. The cold liquid is stale and must have sat around for a while. Just an hour ago, she had to drink a lot of piss, making it hard to stomach more. She keeps going, albeit slower. When the jar is almost empty she can see that the top of white numbers drawn on the jar start to appear. The code is on the jar! But she can’t read it, with the numbers fading in the white liquid. She immediately speeds up again, ignoring her stomach revolting, while her guts try to accommodate the flexible dildo, which is already 60 cm inside.

Once she can identify the code, she enters it and hears a bottom plate of the box fall to the ground. When she tries to lift her body, her tits are still stuck inside. Quickly she feels for the bottom of the box and notices that two levers had been revealed. When she starts turning them, she notices that her nipples are twisting.

“Your nipple piercings are attached to screws. But don’t worry, one full turn will set them free.”

Sister Mary keeps rotating the levers until the pain sets in at half a turn. She allows herself stop for a second, but slowly continues dreading the dildo in her ass. After three quarters of a turn, her nipples feel like they are about to be ripped off. Another short pause, catch your breath. You gotta get out of there. Hold your breath and push. Keep pushing, keep pushing. Ok, don’t hold your breath, just scream.

“Aaaaaaaaaaaaaaaaaah!”

She keeps going until the two screws on her piercing are set loose. Her nipples are allowed to rotate back, but suddenly, she can feel something pulling on her nipples.

“Well done, you released the screws. But they were each holding key weights of two kilos, which are now dangling on your tits. ”

Sister Mary can’t see or reach past the box and does not know what is happening to her tits. The dildo is 65 cm (25.6 inches) in her ass already, and she knows that she will reach her limit soon. What now? Her tits are still inside the box and she can’t release her clit piercing from the seat. She is blindly reaching around on the machine, but can’t find anything. It is hard to focus when the weights hurt so much. Did he call them key weights? Are the keys on the weights? But she can’t reach them. She can only… she has to pull out her tits.

The dildo is already 70 cm (27.6 inches) inside her and the last thing she wants to do is lean into it. But it won’t get any better. Buckle up. She holds onto the back of her seat and pulls herself away from the box. She has to pull with all her strength, since her huge tits are larger than the holes. Against the protest of her guts, she moves from side to side to pull her tits bit by bit out until they pop out, causing the weights to fly into her lap.

The dildo in her ass has already reached 77cm (30.3 inches) and well past her limits, but keeps pushing without mercy. She hurries to check the weights to find a key, which she inserts into a lock at her crotch. As soon as she is free, she desperately rolls her body to the side, causing her to to balance and fall off the seat. The weight of her body pulls the dildo in one quick motion out of her ass. Screaming with agony, she rolls on the floor holding her stomach, which she needs to stop, as the weights are still connected to her tits. Her master allows her to rest for a minute until she has to suck him off. Only then does he remove her weights and allows her to return to her chamber.

From then on, she understood to be fast in time based puzzles and tries to memorize them all. However, every new game appears to be new for her and she just tries to get through as fast as possible.

However, her largest struggle is that she has to say goodbye to her family. After one month of weaning the puppies off, comes the day where she has to say goodbye. The entire morning she had been fucking her sire and swallowed his come in order to cherish the last moments with him. Tears are rolling down her eyes, when she swallows his tens load and he is too exhausted to fuck her ass anymore.

Even though she is technically not allowed, she gives each of her pups a last drink of milk before an organizing sister comes at 9 o’clock to fetch the entire family.

Once she is alone in her room, she breaks down on the floor and starts crying. She felt like

On that day, she tries to hide her sadness from the masters, but her enthusiasm is noticeably lower, for which her ass and pussy gets punished a lot.

After lunch, the master that always rips her tail out comes through the door. She first dreads her sore ass getting tortured, but then realizes that he often takes her out to the park to get railed by wolves. Maybe her sire is there as well? For the first time that day, she has a genuine smile on her face and joyfully crawls to her master.

Dutifully, she practices all the usual tricks and enthusiastically fucks two brothers that he orders in afterwards. After downing everyones cum and piss, they go to the park, where she starts looking around trying to find her sire. This is now the first time in the park without him, making the loss of her family more of a reality.

Unsuccessful in spotting him, she eventually marks one of the trees. Not long after, many wolves answer her announcement of an orgy and get readily serviced. Looking through the crowd, she can’t see anyone from her family. Without having her sire in her ass, she goes on all four so she can get fucked by two of them at the same time. Every time a new one approaches her, she hopes to see her sire, just to be disappointed again.

After half an hour she got through each one of them, but none was who she had hoped for. With a new wolf showing up from time to time, she keeps going, hoping that he would eventually show up.

After an hour, her stomach full with sloshing liquids and it gets harder for her to keep fucking more wolves. Her movements are getting slower, but when her master asks whether they should return back to the chamber, she tries to muster a smile and shakes her head. He leaves her with the pack while going for lunch. When he comes back an hour later, her stomach is bulging and she can barely keep herself on all fours. She greets him with a forced smile, but her red eyes and occasional sniffling show that she had been crying while alone. Her body is at her limit, but she can’t let go of the hope that her sire shows up.

In the end, her efforts were in vain and they go back to her chamber with the most wolf cum she ever had in her stomach.

Two weeks later, her tits are completely healed and the master of the day makes her an offer.

“It seems you are still dwelling on the wolf and his puppies.”

“I do miss them so much, master.”

“I talked with some of my colleagues and we came up with a game that may allow you to earn back one or more of your mutts. Are you interested?”

Her eyes lit up and she crawls towards him.

“Of course, master, I would do anything to get them all back.”

“Stand up, let’s shake hands on it. But this is your only chance, you hear?”

Sister Mary gets on her feet and joyfully shakes the man’s hand. He smiles and talks into his device.

“You heard her, fellas, we have a deal. Come in!”

Six more masters come in and a brother wells in the fucking machine with two huge white dildos. At the end comes an organizing sister hold one of the puppies on a leash. Sister Mary immediately wants to run over to hug him, but it stopped by the master.

“Not so fast, slave. You have not earned him yet.”

She gets back on all fours and covers.

“I apologize, master. How can I earn him?”

He reaches her a small bottle of piss.

“Your tasks are as follows: You drink this 40ml of piss, inflate your tits by 10cc, fuck this brother, and then get fucked by this machine fo 2 minutes.”

Sister Mary takes the bottle and pauses for a second. This is too easy. Is there a catch? The master notices her hesitation and laughs.

“There is no trick. Go ahead, give us a show.”

She unscrews the bottle, downs the content and shoots heat into her breasts without noticeable expansion. Then, she fucks the brother, swallows his load and gets into the machine for two minutes. After a short round of applause, she is handed the leash of her beloved puppy. When she hugs her dear child, the masters aww at the heartfelt moment. The organizing sister soon after comes with the second puppy into the room. The master walks up to sister Mary.

“You can either go back to your room with your first puppy or you can play a game of triple or nothing. If you manage to triple your tasks from before, you can get them both. What do you say? Shake hands?”

Sister Mary does not even hesitate and shakes his hand again. He reaches her a bottle with 120ml, which she downs in one go and takes another unnoticeable inflation to 30cc. She proceeds to fuck the brother three more times. After gulping down his last load, she gets on the machine for six minutes, which she concludes with a climax. As promised, she is given her second puppy, whereupon a third puppy is brought in.

“What will it be, little girl? Do you take the two puppies or is it another round of triple or nothing?”

With a smirk, sister Mary shakes hands and empties a 360ml bottle and inflates her tits by 100cc. Afterwards, three brothers are brought in and she drains their balls three times each. Happy with her progress, she rides the machine for 18 minutes and comes three more times.

With her third puppy by her side, she sees the last one brought into the room. With no hesitation, she accepts to play for all four of them.

Without a pause, she chugs down a 1080ml (36.5 ounces) bottle and has her breasts inflated by a total of 300cc. She notices some stretching, but is unconcerned, regarding what’s at stake. Nine more brothers are brought in, which is eagerly starts fucking. However, it takes her a bit under two hours to satisfy each of them three times. A bit wonky on her legs, she sits down on the machine and has to endure 54 minutes of constant fucking. Initially she can squeeze out a few climaxes, but by then end, she tries to get it over with.

She needs a pause before she has the energy to hug the final one of her four puppies. They share the love by licking her face and snuggling around her.

The door opens and the organizing sister brings in the sire. When he sees her, he tries to run over, but the sister holds him tightly by the leash.

“My lovely sire, I’m coming!”

She pushes her puppies out of the way and wants to walk over, just to be held by the arm by the master.

“You want to claim what you haven’t earned? Right now, you have only earned the four small wolves. You can go back with them right now, if you want. That is not a bad deal I think.”

“or I can play one more game of…”

“Triple or nothing. If you lose, you are back at zero. But if you win, you can even have the big wolf.”

She thought that seeing her sire again would lessen her grief, but it makes her loneliness even less bearable. If only she could hold him again. She knows that her body is aching, but her mind is made up. She needs to get him back, no matter the costs. She turns over to the master holding out her hand.

“Let’s shake hands, master.”

Three bottles with a total of 3240 ml (0.86 gallons) are carried in, followed by 27 men. Seeing the new scale of her tasks worries her a bit. The game had been going for 4 hours now and all the exercise made sister Mary thirsty. She easily downs the third bottle, but struggles a lot already with the second bottle. She had been to the bathroom three times already, since her body processed the contents in her stomach quickly. But there was not enough space to accommodate so much liquid.

They allow her to reserve the last bottle for the marathon of fucking that is about to occur. Before she can go to the bed, they fully inflate her tits by 1000cc. With the original size of 3000cc, she is now at 4000cc for the first time. However, her main problem right now is to squeeze 81 loads out of 27 men. Initially, she tries to be fast, rides them, sucks them off, and smashes her hip into them. She tries to serve three of them at all times. As a result, she gets all of them off for the first time in half an hour. However, her muscles are getting weaker and her stomach is too full to allow any further moving. She resorts to just spit roasting two of the brothers, which requires another hour to get them all off the second time.

Exhausted and sweaty, she downs the last bottle for fluids, which almost pushes her stomach over the edge. At the end, she gets fucked only by one man each time, during which she is fighting in order to gulp her previous load down.

After four hours, the orgy is over and sister Mary lies motionless on the bed. The men did her the favor of alternating between her pussy and ass, in order to allow her to get some rest. Yet, her holes are on fire. They had been fucked for hours by 36 cm (14 inch) cocks for hours and before they were fucked by the machine for almost an hour. Oh no, the machine, she had forgotten about it. Does she still have to do it? How long was it last time? Just lie down for now, give the body some rest.

However, the men are instructed to carry her over to the machine, where she is strapped in for a last ride. The moment the dildos start thrusting, her crotch reminds her of how much pain she is in. Her holes are so sore, everything hurts so very much. The machine used to give her pleasure, but now it is only pain.

She looks up and sees the sire. There he is. He can be hers again. Just go through it, you are almost there. She clenches her teeth and fights through the pain. However, after 20 minutes she can feel that she is slowly reaching her limit.

“How much longer, masters?”

“Last time, you did 54 minutes. Three times of that is a 162. That means you are about one eight there.”

She can’t believe what she is hearing. Seven more times? Can she even do that? Look at the sire, you are doing it for him. You don’t want to be alone anymore.

After 20 more minutes, she is screaming in pain. The pain suddenly increased significantly, it is unbearable for her, she can’t ignore it.

“Aaaah, how much longer?”

“You are about one quarter through.”

Sister Mary looks one more time at her sire, she tries to get some more motivation to keep going, anything to keep pushing herself. But she can’t. She can’t fight for him.

“Stop the machine!”

While she is screaming at the top of her lungs, the master calmly walks over to her and crouches.

“If we stop the machine now, you lose the game, do you understand?”

“Yes, please shut it off, please!”

“You will lose everything you have earned.”

“Shut it ooooooooooff!!!!”

“Say that you understand.”

“aaaaaah… aaaaah … I understand! I understand that I lost! Aaaah!”

The machine stops and she is strapped out of it. She reaches for her ass and notices a few drops of blood. A doctor examines her and concludes only a minor fissure at her sphincter, which will heal in a day or two. But if the machine had continued, the outcome could have been more severe.

Sister Mary does not even listen to what he is saying, the puppies are taken from her by the organizing sister and removed from her chamber. She had them, she had them all, but she wanted everything. Why did she not stop when she was ahead? The master even said that she already had a good deal with her four puppies. She had her chance and gambled it all away. She had gotten too confident and greedy and now she has to pay the price. Sister Mary hates herself. Why is she so dumb? So incapable?

While she is crying and sobbing on the floor, the masters confer for a bit and then turn to sister Mary.

“That was quite disappointing, wasn’t it? We had given you the possibility to get your puppies back and you threw it all away.”

Sister Mary sits back up, sniffs and nods an agreement.

“I was so stupid, masters.”

“But, we agreed on a small consolation prize. The wolf will fuck you in the ass one more time, as a goodbye.”

They lead the wolf over to her and the sire immediately starts fucking her broken ass. It hurts like hell, every thrust causes more pain than the last one. But sister Mary’s is not uttering a single sound. Don’t scare him away. She wants her sire to enjoy his bitch one more time. The reason that her ass is on fire, is happily thrusting away. When he pulls out, she sits up, swallows his load and cleans his bloody cock in her mouth.

The event is over and everyone leaves her chamber. She is alone again.

Some other machines do not test her brain or the toughness of her holes, but her stamina.

A month later, the same master that had offered her the game to win the puppies back visits her again.

“You have lost your chance to get your puppies back, but maybe you can see them again.”

Sister Mary is listening, but with a worried look.

“I’d love that, master. But, I’m scared that it is another game that I would lose.”

“Yes, another game would not do well for you. No, your puppies receive training and maybe you can help. We saw that you have quite the connection with them.”

“Training?”

“Yes, they need to learn how to behave. Don’t attack a human, learn to sit, roll over, fetch, stay, and so on. Maybe they feel more comfortable having you around. It was sweet seeing you fight for them and we thought it would make you happy to see them again.”

“It would, master, it would make me very happy!”

“Well, let’s get going then.”

He leads her to a training ground in the park, where she gets to be reunited with her kids. They kids lick her face, jump around, and hug her non-stop. They have grown much larger than sister Mary and topple their proud mother.

Once the welcome party is over, the master starts with simple commands. He tells sister Mary to sit a few times until he directs the same command at the puppies. It takes her a few tries pushing down their behinds until they understand what to do.

Similarly, sister Mary shows them how to lie down and roll over. It seems that they start to understand that they are to imitate their mother. After they go through other commands, they are all allowed to play for a bit, catching a ball thrown by the master. The first time, sister Mary manages to get the ball. However, afterwards, they manage to outrun their tiny and slow mother every time. But she does not mind, she hasn’t been this happy in a long time.

When play time is over, the master instructs her to mark one of the trees. Sister Mary is a bit hesitant. She knows that this initiates sex, but the master makes her do it anyway. Her puppies curiously smell the tree, but then just sit down, looking puzzled at the master and their mother.

“Make them understand what a marked tree means.”

“What do you want me to do, master? They are my children.”

“Not anymore. They have already reached sexual maturity and you make them adults now. Haven’t they seen you get fucked by their father a hundred times already?”

“Master, I have fed them since birth. We have been a family for all their life…”

She stops when he gives her a stern look.

“Are you going to disobey me, while giving them obedience training?”

Sister Mary slowly walks to one of her puppies, who starts jumping, wanting to play around. However, the sister Mary calms him down, makes him sniff the tree and then starts petting him on his back. She slowly moves lower and lower until she reaches his penis. He immediately jumps back, tilts his head and gives his mother a questioning look. She has to crawl over to him again and lays him on his back. When she reaches for his dick, he wants to get up again, but his mother holds him down firmly. She can sense that he is nervous, so she strokes him gently in order to calm him down. After a while, she sees his son cock gradually extend. Once it is fully out, she lowers her head, closes her eyes and sucks in her puppies cock. His initial yowling eventually stops and he lets his mother do her work. After a while, his tail is swinging and his hip is twitching until she can feel him coming into her mothers mouth. Sister Mary looks up at her master, who is grinning back at her, and swallows the load. She sighs and lets him go.

“You need to teach your other three boys as well.”

Sister Mary crawls over to her bewildered puppies and makes sure that they all get to come in mothers mouth, who dies inside every time.

“They still don’t know how to fuck their bitch mother. Start with the first one.”

She walks towards her first son again and starts stroking his huge again. Once he is ready, she goes on all fours and wiggles her ass at him. It seems that he does not understand his mothers invitation, so she has to pull him by his cock towards her crotch and shoves him inside his pussy. His instincts take control over him and he starts fucking is human mother’s pussy for a bit. Then, she has to pull him out and insert him into her ass. He wants to continue humping, but is stopped when his mother wants to show him that he can insert his knot into her ass, too. Once he comes inside her ass, panics for a bit, as his knot is still stuck inside his mother’s ass. Once she pops him out, he can run around freely again.

The same procedure she has to go through with the other three puppies. The master makes her plug her ass with the tail again, so she can savor her childrens cum for later when she is in her chamber.

When she is alone again, she wrestles with the thoughts of having forced herself onto her children. They are not puppies anymore, they are wolves. But what is she now? Their mother? Their teacher? Another bitch to fuck?

The next few days, she is training with them as well. At the beginning, they are learning commands, but eventually they only meet to fuck their mother. After a week, they wrestle who gets to fuck her first, until they find out that they can spit roast her. Eventually, they stop greeting her with licks or hugs and just fuck her as soon as they see her. Oh well, there is the answer. Just another bitch to fuck. Having given up being their mother, she stops having any reservations as well and enjoys herself.

Two weeks later, their training is complete and they are let out in the park to roam. Sister Mary sees them from time to time, when they are standing in line to dump another load into some bitch’s mouth.

After a total of 220 days (over 7 months), sister Mary meets the requirements for level 8. Her ass can now take a circumference of 42cm (16.5 cm) a flexible depth of 80cm (31.5 inches) and a rigid depth of 45 cm (17.7 inches). Her pussy can take a circumference of 45 cm (17.7 inches) and a depth of 33 cm (13 inches).

After fucking her dear father John, he increases her tits to a volume of 3500cc (expandalbe to 4800) and gives her a gold coloured metal collar.

This time, the elevator ride is going downwards to ground level. Her new chamber is even larger and more beautiful with house plants and paintings on the wall. Even more exciting are the new privileges of pills with stronger dosage and the right to request a trans sister once a week for an hour. A person to serve her, just like a princess!

After father John is done explaining the new room to the grinning sister, they walk through an extra door, which leads to a grass area with an animal that sister Mary has never seen before.

“Father John, what is that over?”

“That is a foal.”

“Aww, it is lovely, I have never seen a foal … wait, father John… did you bring me here in order to have sex with this foal?”

“No, sister Mary.”

She sighs with relief and rolls her eyes with a smile.

“You are to feed the foal.”

“Feed the foal … with … ?”

“Your milk, of course.”

Signs of concern grow on her face.

“Milk? Like a baby? Is … is this a baby foal, father John?

“Yes and no, a foal is a baby horse.”

“It is a baby? It will grow? But it is almost as tall as me! How big is a grown horse? Grown like… Father John, does this foal have a father? I’m scared.”

He smiles for a second and then whistles. Sister Mary can hear a loud trampling and seconds later a huge animal comes around the corner. Running towards the foal.

She just stands like a deer in the head light, scared of the monstrum running towards her.

“Sister Mary, you may want to show him that you don’t mean his foal any harm. Remember what you learned with the wolf?”

She quickly grabs her breast and offers it to the foal, which promptly starts sucking with much more force than the puppies. For a second she forgets about the father and wonders about the hunger of that “baby” sucking her dry.

The father stops in front of her, smells for a bit and then calmly walks off. Sister Mary lets out a sigh of relief. While the father of the foal walks around them, she gets to see his size. His shoulders are higher than her and his head is probably 220 cm (7.2 feet) high. Just walking seems to shake the ground. Father John notices her seizing up the horse.

“The foal almost weighs about as much as the wolf. But the stud weighs over 1000 kg (2200 pounds). Quite impressive, right?”

“I didn’t know such large animals existed. It’s terrifying… the stud?”

“A male horse is called a stallion, but if it is a father, it is called a ‘stud’. A female horse is called a ‘mare’”.

Sister Mary has to switch the foal to her other tit, as it has already sucked the first one dry. In the mean time, father John has fetched the stud. Sister Mary is looking at him with a worried expression.

“Why did you bring me here, father John?”

“You know why. To get fucked by a horse that is about 20 times heavier than you. Now, go suck your stud off.”

She carefully walks over and touches the horse at the face, down the neck, and along his side. With slow strokes, she moves her hand down to his belly, which appears to work, because after a while, his penis starts growing. She proceeds to stroke it, watching it get longer and longer until it finally reaches its final form. Sister Mary is in utter disbelief when it stops at a length of 50 cm (19.7 inches) and a circumference of 30 cm (11.8 inches).

In her bewilderment she almost forgets that she is supposed to suck it off. Careful for his powerful legs, she bows down and starts licking the head and eventually sucks him inside. She can barely fit the head in her mouth and resorts to stroking the shaft of the gigantic member. She can feel the stud wanting to thrust, causing her head to get pushed back. But as long as she keeps stroking him, he does not have to move.

Sister Mary pulls him out in order to lick his shaft, for easier stroking, but her tiny tongue requires a lot of effort to cover such a large surface area. Eventually she can stroke him faster until she hears him panting and his body tensing up. She knows that he is about to come. She wants to be ready, but does not expect a massive stream of cum hitting the back of her throat, filling her mouth. It almost spilled out of her mouth if she didn’t immediately close her lips around his cock and started swallowing. However, her mouth is shortly after filled again, forcing her to quickly gulp it down again. Just to keep up with her stud, she pulls out most of his cock, creating a space that she he is pumping full at the same pace that she is trying to empty it. After several gulps, the stream slows down and eventually ends. She groans and catches her breath, while the master is smirking.

“Yeah, that usually totals up to about 250 ml (4.5 ounces). But you got it all. Well done. Next, let’s see how your pussy can handle it.”

“Father John, are you serious about this? He is too big. How can I even get him above me? If he tries to hold onto me, he will crush me.”

Father John presses a button on the wall, activating a motor driven to extend a metal frame with a lower and an upper bar. He guides sister Mary to the frame and instructs her to hold onto the lower bar. The moment she is grabbing the bar, the stud walks up to her and buckles up behind her, putting its front legs over the upper bar. He starts thrusting in the air, hitting sister Mary’s leg with his cock. This seems not to be his first rodeo.

“Go on, put his dick in your pussy.”

When she grabs his cock, he promptly thrusts, sliding two thirds of his cock through her hand. Sister Mary is scared. She looks at father John, who rolls his eyes at the teen about to get fucked by a horse.

“Just step forward a little. Then he can’t thrust as far. Get moving!”

Sister Mary shuffles a few inches forward and carefully puts the head of the cock on her pussy. As soon as the head slips inside, the stud thrust as hard as he can. However, with her standing so far ahead, he can only get in half of his cock. Trying to get in more, he shuffles around with his hind leg and keeps thrusting forward. He can’t get in more, but his thrusts are much more powerful that anything that has poked inside of sister Mary. All the muscle training she has done allows her to squeeze down hard on any human dick inside her, regardless of how much she has stretched herself. But the stud seems to not slow down, no matter how much she tries to squeeze his cock.

“Ok, now back into him. Let’s see how far you can go.”

She holds onto the bar with both hands and very carefully inches backwards into him. After a few steps, she can feel that he is close to filling her out completely. Suddenly, she can feel him hit her cervix, causing her to jump forward. It almost felt like he was going to lift her up by her pussy. She groans and holds her stomach, but father John is unperturbed.

“Go back and let him fuck you. Make him come.”

She puts him back in her pussy and continues to back into him. This time, when he hits her, she tries to soften the blow by stretching her legs and pulling herself up by the bar. After some time, she manages to keep a rhythm that allows her to stay below him and take his cock. But even with her attempts to move with the stud does not eliminate her pussy getting punched repeatedly by the largest cock she ever had. Luckily, it does not take him long to come again. But father John is not done.

“Good, now take him up your ass.”

“Father John, he is going to rip me apart if he fucks my ass!”

“Nonsense. You just showed me that you can take 45 cm (17.7 inches) of a stiff dildo up your ass when you were tested for level 8. That is most of his cock.”

“Most, but not all. Also, I trained with thinner toys and without thrusting.”

“Looks like this is the perfect training then. Stop wasting my time.”

With a doubtful expression, she reluctantly walks back to the horse and grabs his still rock hard cock. Very slowly, she guides him to her back entrance, but as soon as he pops inside, her careful movements are thrown out of the window with the horse thrusting like wild. Even with sister Mary pulling herself forward, the steed managed to shove 30 cm (11.8 inches) up her ass. Just months ago, she needed several minutes to get that length of her sire into her ass. Now it gets shoved inside her in an instant.

Once the horse is moving at a state rate, she dares move slightly closer to him. At 35 cm (13.8 inches), she needs to stop. This feels dangerous. The horse is enjoying himself, fucking just another hole to dig his dick into. Sister Mary is hanging on for dear life, while she has to hope that her colon guide can safely guide the cock past her organs. Father John walks up to her, with seemingly less empathy than the horse impaling her insides, touching her stomach that bulges with every thrust.

“I want you to take five centimeter (2 inches).”

She looks at him, shaking her head, but closes her eyes, when he starts pushing her gently towards the horse. After two small steps, she opens her eyes wide and throws her head back, when she feels the horse thrusting even deeper into her ass. Disregarding her grunting and screaming, father John observers her stomach, now bulging even higher, close to her ribcage.

Sister Mary tries to be strong in front of father John, but the horse is pushing her to the edge. It is such a large animal. Even its newborn foal is heavier than her. How, is an 18 year old girl supposed to take 40 cm (15.7 inches) of that monstrous species in her ass? She wants to walk forward, she wants to pull herself up, but father John holds her firmly, looking with a smile into her face distorted by pain, bobbing with each thrust.

The horse thrusts one last time, keeping his cock deep inside his new mare’s ass and fills her with his seed. Father John lets go and sister Mary falls forward on all fours. However, the dick is so long that she has to crawl a bit further until she can finally pop the head out of her ass. Like the good girl that she is, she clenches her ass, knowing that father John will hand her a cup to gather her next drink. Once she has downed it, she gets to sit down on a chair.

“Congratulations, sister Mary. It seems the stud has accepted you as his mare. Do your duty to feed his foal and to please him.”

“… yes, father John.”

“In the first days, the foal needs to drink basically hourly. You may chose to sleep in the same bed as the foal. However, unlike your puppies and the sire, the horses can’t sleep in your chamber. Therefore, we have provided an intermediate room with this large bed, in which you can sleep with and feed the foal. The father sleeps in a stable, where he is taken care of by professionals. But he will likely appear whenever you come here, now that you are his mare.”

“I understand… will I have to take him all in my ass eventually? He is so much larger than what I had before…”

“You are now ascending to levels that not all sisters will reach. Therefore, we cannot demand any accomplishment from. Having said that, seeing your progress so far, I very much expect you to take him all.”

Sister Mary is not sure whether she should be proud or scared and just walks over to her tail plug, putting it back in. When father John notices that he shows her to her new wardrobe, which have tail plugs with straight hair instead of a fluffy fur. After she puts it in, she turns around, showing it off.

“Good job, you are no longer bitch, but a mare. I see that it is dangling only 2.5 cm (1 inch) over the ground. Soon, you will be able to walk upright. That is a great honor.”

Sister Mary blushes with a big smile on her face. She can’t wait to achieve that goal. He will be so impressed with her. However, if anything, he would be impressed with how quickly she seemingly had already forgotten that moments ago he made a horse ravage her ass while she was scared for her life.

Once he leaves, the foal is already asking for more food. The feeding session does not last long, as the foal is sucking with much more force than the puppies, draining her tits quickly.

She has no more masters for the day and after her physical training, she searches for different dildo shapes and soon after finds horse cock dildos with various shapes. She needs to train her ass if she wants to survive more of her stud blasting her ass. With some practice she can get a larger dildo inside of her up to 42 cm (16.5 inches), which is slightly more than what her stud managed to shove inside, but she is struggling with the wide tip and can’t thrust as hard as the horse. She will have to keep practicing with the toys, but it won’t substitute the real thing.

The foal is already clinging to her mom, wanting food and attention. Therefore, sister Mary decides to sleep in the intermittent bed with her new baby. However, while the puppies sucking on her breasts did not wake her up, the foal drinks with such intensity that she gets woken up a few times.

IX. The level 8 of sister Mary

The next morning, she takes her new pill and notices a slight increase in its effect. She makes passionate love to her first master, partly because of her horniness and partly as he may not call for the stud if he is satisfied.

This assumption was soon proven wrong, when he tells her to go outside and take the horse in her ass. As soon as she opens the door to the outside, the can hear her stud running, eager to fuck his new mare.

She was hoping that the stretching last night would make it easier, but the horse cock is ravaging her insides. Her screaming is interrupted, when the master walks up to her and hands her a vibrator.

“I want you to come, while he fucks your ass.”

Sister Mary is struggling to grab the toy, with her body thrown around by her stud. Holding the vibrator with one hand, she can only use her other hand to hold onto the bar. She tries to relax and enjoy the vibrations and can eventually feel some body response, but it takes her so long that the horse already starts coming in her ass. While he stops, to pump her full, she apologizes to her master.

“I’m sorry master, I tried, but he came faster than me.”

“Don’t worry, the horse is not going anywhere. Try again, when he starts thrusting.”

Her stud gives her less than a minute of rest until he starts moving already. She shakes her head in disbelief, closes her eyes and switches on the toy.

Her concentration is disrupted when she feels something touching her nipples. When she opens her eyes, she sees her baby foal sucking on her breasts and looking at her with big eyes, melting her heart. She wants to give tender care to one family member, but is also getting her ass destroyed by the other one at the same time. For a moment she has to laugh about the irony. However, with the intense nipple stimulation, it seems her body is able to override her fear of getting impaled by a horse cock. Maybe she can manage to climax using all the stimulation. Focus on the toy, focus on the breasts, you can do it. Come already, what kind of a mare can’t handle her stud and his huge cock, driving in and out of her ass? She should be proud of how much he can enjoy her holes. Such a huge, majestic creature and she still manages to handle him, please him, make him come. And she can also provide for the foal, what a good mare she is. This is right, this is good, come, give it to her, she can handle it. Fuck that ass. He is getting faster. He is gonna come and so is she.

“hgnnnaaaaaaah, I’m coming, give it to me, fill me uuuuaaaaaaaah!”

The stud is pushing deep inside her, blasting his seed into her guts. Her entire body is exploding into an orgasm with her legs trembling. Almost losing her footing, she needs to hold tight onto the bar in order not to fall backwards into his cock. Once she has calmed down, she shuffles forward, pulling out the cock in her ass and lies down for a moment.

The show made her master rock hard and she has to get up soon to ride him back in the chamber and suck him off. He still makes her swallow the loads sloshing around in her ass and finally leaves her alone.

Everyone of the masters that day wants her to fuck the horse. Sister Mary was hoping that it would get easier, but each time is a huge struggle for her. Each time she tries to climax, but has no success until she gets to fuck a cock not attached to a horse. At least there is some variety in regards to which hole should please the horse. The least struggles she has with sucking the stud off, which was probably the reason it was the least requested.

In the evening, she makes a request for her weekly sister, just to find out that her next available free time slot is in two weeks. It would appear that there was a huge demand for her ever since she ascended to level 8. She can easily guess why, considering that they all make her fuck the horse.

When the time for her requested sister comes, she collects all her vibrating toys on her table and stretches out on her bed. The door opens and her level 6 sister enters the chamber.

“Good day, mistress, how may I serve you?”

“Come join me in the bed, sister.”

Sister Mary wants to lighten the mood and tell her that she does not have to call her mistress, but when she crawls closer, she recognizes her. She was the sister in the training room that scolded her for asking about the butt plug. She used to be a higher level, but now the tables have turned. Sister Mary is not sure whether the other girl remembers her, but that is not really relevant right now. For one hour, she is hers. Maybe she will have to drink her piss.

Sister Mary attaches vibrating toys to her nipples, into her pussy and ass and requests to be eaten out by her pet. The sister obliges, places her head between sister Mary’s thighs and starts with tender teases and transitions steadily into licking and sucking to the best of her abilities. It does not take sister Mary long to build up a continuous row of climaxes, riding a wave of endless excitement.

After half an hour, she needs to stop out of exhaustion and to give her overstimulated body some rest from the vibrating toys. Having caught her breath, she instructs her puppy to lay on her back and to wear the vibrating nipple toys and to hold another vibrator against her own clit.

While she watches her pet enjoy the toys, sister Mary slowly inserts her fist into her pet’s pussy. Once she got as far as possible, she starts probing her ass and inserts her second hand into her ass.

“How far can you take it in the ass, pet?”

“I don’t know, mistress, maybe 30cm?”

Sister Mary keeps inserting her arm, watching her pet’s breathing intensify. Once she hits the elbow, she is at her limit.

“That is all I can take, mistress, please stop.”

“That is not bad, I guess you have trained your ass well.”

“Thanks, mistress, I try my best.”

“Now come, my little pet, I want to feel your body tighten around my arms while you come.”

She clearly struggles being so full, but after some trying, she manages to squeeze out a few orgasms while getting double fisted by her mistress. Feeling her holes twitch around her arms reminds sister Mary how far she has already come. She has taken much larger objects with less difficulties.

“Mistress?”

“Yes?”

“You probably don’t remember, but I was once a higher level than you and talked quite dismissively to you.”

Sister Mary tries to act surprised.

“What do you mean?”

“In the training room. I didn’t want to help you, because the competition was already difficult enough. But it seems I can’t stop the good ones from rising to the top. I am sorry about how I behaved.”

“Oh, now I remember.”

She pulls out her fists carefully and pauses for a moment. She wants to cling onto her desire for revenge, but can’t bring herself to punch down.

“How did you do it, mistress? How did you make so much progress? I thought I was already training as much as I can.”

“I honestly don’t know. First, I thought I was not working enough, then I thought I was working harder than anyone else. Now I hear that some sisters can’t reach level 9 no matter how much they train. Maybe it is a talent given by the lord or luck. I have resorted to serving and providing pleasure as much as I can, and I feel like I have received pleasure in doing so.”

The pet is raising her eyebrows hearing this answer. Sister Mary is happy, having provided a new perspective. Her pet is mostly surprised at the useless answer, apart from the information about reaching level 9. Maybe this is not the place to obtain wisdom.

“I also think that these tail plugs provide good training.”

Sister Mary proceeds to shove a 85 cm (33.5 inches) plug in her ass, which has a circumference of 43 cm (16.9 inches) at the widest portion of its base. She jumps off the bed and puts her toys away. The tail now finally reaches the floor, allowing her to walk upright. She is so proud of her achievement that she tries to show off at any chance she gets. Her put is in disbelief how anyone can walk or even jump around with her ass filled like that. She tried to find tips for improvement and now is rather more demotivated than before.

Since there is still some time, sister Mary rides her pet’s face for a bit, managing to come three more times while her ass is still plugged.

As soon as she is alone again, she requests her next sister, knowing how quickly her time slots fill up.

Sister Mary now manages to get 45 cm (17.7 inches) of her stallion in her ass, which means she can only get him as deep as the depth she needed to clear for level 8. As a result, she keeps training for depth with her toys and finds that she can still straighten her colon a bit more upwards. Initially, seeing her stomach bulge frightened her. But she now swivels her toys around in big arches, which creates a bulge that wanders around her stomach. This allows her to make gradual progress with toys, but not with her stallion yet.

One day, one of her masters buys her a bench, which is placed under the bars. After she sucks him hard, she puts his cock in her pussy and rides him for a bit. Then, he stops her and calls for the horse. When she is about to get off her master in order to make space for her stallion, he stops her.

“No, I’ll stay inside. I think you can take us both already.”

The master operates a remote and the bench is driving upwards. The stallion is already hanging in the bars, dangling his cock above her back. Sister Mary looks a bit overwhelmed, but composes herself shortly after and grabs her stallion’s dick.

“A bit higher, master.”

With a grin, he controls their height until she can pop in the member of her stallion. As expected, he thrust in as deep as he can, but can only get 30 cm (11.8 inches) in. Sister Mary is not so much struggling with the depth, but with his movements. The cock of her master locks in the position of her pussy, but the thrusting stallion keeps pulling up on her ass uncontrollably.

“Aaaah, master, he is pulling up my ass!”

“Should we go higher then?”

“Yes, please, yes, master!”

It takes a bit of guessing around until sister Mary can find a sweet spot, where the thrusts of her stallion cause the least discomfort. However, her relief is short-lived, when she notices that the bench is driving slowly towards the horse.

“Master, we are moving! What is happening?”

“I’m controlling the bench to move towards your stallion in order to let the horse enjoy more of your ass. Tell me, when we are at your limit.”

After pausing for a moment, she braces herself and closes her eyes.

“Ok, master.”

When the stallion is 40 cm (15.7 inches) inside, the master needs to lower their position in order to take into account the step thrusting angle. At 43 cm (16.9 inches) she starts to clench her teeth and at 45 cm (17.7 inches), she is tapping out and her master stops moving the bench after adjusting again for height.

“The horse will keep fucking your ass, until I come, slave.”

Sister Mary quickly nods her head and then resumes focusing on her holes. Not only is the stallion thrusting as deep as her limits allow it, the powerful movements of the horse are pulling her pussy and ass apart. She needs to hold onto the bar above her as tightly as possible in order to counteract the forces of the much stronger stallion, which is having a great time and oblivious to the struggles of his mare.

After a few minutes of getting her ass destroyed she realizes that her master is not getting a lot of stimulation, since her struggles cause her pussy to stay stationary relative to her master. She needs to change plans. First, she clenches her pelvis muscles, clamping down on her master’s cock. Then she forfeits her safe position relative to the bench and starts grinding back and forth, massaging her master with her tightened pussy. She tries to move with the cock of the horse, but her stallion wants to keep thrusting. So now she is dancing a dangerous tango with the stallion, where she wants to move with his cock and he wants to move against it. She can keep up for a while until she messes up and the horse cock impales her deeper than usual. It does not cause damage, but she is gasping and groaning for a while, each time that it happens. Her master is enjoying her new strategy, but wants more.

“You know what would help? If you came like this.”

Sister Mary’s arms are getting tired, she is panting from exhaustion and her ass is in pain, but she knows that excuses won’t help.

“Ugh…master, ha, ha, would you kindly, aaaaaah … suck my hhhhgn … tits, please?”

He had mostly played with her bulging stomach until then, but does her the favor of tending to her breasts instead. She had come many times before while getting fucked by her stallion, but didn’t face such complications before. She focuses on all the sensation of her body, the cock clenched in her pussy, the suction on her tits, the pleasure of the stallion and the cock ravaging her guts. It takes her some time, but eventually her body responds and climaxes. However, her master shakes his head.

“Close, but maybe one more time will do the trick.”

She gives him a look of desperation and breathes heavily for a while, trying to recollect herself. For a few seconds, she unclenches her holes, and relaxes her arm and vaguely tries to balance out the horse in her ass in order to prevent injury while she tries to give her body a moment of rest. Her guts have to accept a few painful thrusts, but there is no other way to get herself ready. After a minute, she nods to her master and braces herself for a last ride.

She resumes grinding, but soon after notices her strength fading again. In order to distract herself, she slaps the horse on the side and starts pleading.

“Come on, my stallion … hah, hah, make your mare come one more time … ahhhhh … Just like before … I can feel that you came already three times … your cock is stirring around your semen in my ass, I can feel it … hah, hah, hah. Keep fucking, make me cum, don’t you disappoint your mare. Don’t you dare come before finishing me off one more timeeeeeaaaaaaagh”

Sister Mary manages to squeeze one more climax out of her body, while she struggles to stay on her trembling legs she can feel both her holes getting filled with cum. Once the climax of her master has calmed down, she allows herself to collapse on top of him and to slide off to the side.

Her master congratulates her while she is emptying the contents of her holes into a bucket to subsequently swallow its content. As a rewards, he sponsors two brothers that fuck her well for half an hour. Sister Mary thanks her master in return by fucking her stallion one more time.

She keeps up her practicing and eventually fucks her stallion even in the evening when no master is around. Her hard work pays off and after a total of 270 days, she meets the requirements for level 9. Her ass can take a circumference of 46 cm (18.1 inches) with a flexible depth of 90 cm (35.4 inches/2.9 feet) and a stiff depth of 50cm (19.7 inches), where she can almost take her stallion balls deep. Her pussy now can take a circumference of 50cm (19.7 inches) and a depth of 34 cm (13.5 inches).

After fucking her dearest father John, he expands her tits to 4000 cc (expandable to 5000cc) and attaches an emerald collar around her long neck.

He leads her to her new luxurious chamber with its own inhouse stable with her stallion. She is now allowed to roam areas that are usually restricted to masters such as some halls and the park. Furthermore, her pill dosage is further increased and she can now request weekly either a trans sister or a sister. Sister Mary is overjoyed, but worried about negative aspects that may await her.

“Yes, it will become more difficult, but not by a lot. Restrictions regarding machines and horses will be lifted, but I think you can handle that. Train well, because at level 9, we will send you to other institutes as a temporary exchange sister. The demand for someone as young as you will be high. Don’t bring shame to our institute when you are gone.”

Her eyes grow big and she gets even more giddy than before.

“I always try to be a good girl for you, father John.”

He pats her head and turns around to leave.

“Father John, is there no level 10?”

“Right, there is. But it is rare that someone manages to get that far… your ass has to take a circumference of 50 cm (19.7 inches) with a flexible depth of 100 cm (39.4 inches/3.3 feet) and a rigid depth of 55 cm (21.7 inches). Your pussy needs to take a circumference of 55 cm (21.7 inches) and a depth of 36 cm (14 inches).”

“… that is a lot, father John.”

“But I have faith in you, sister Mary.”

“And I have faith in the lord, father John.”

He needs to turn towards the door, so she can’t see him roll his eyes over her naivety and subsequently leaves her alone.

In the evening she celebrates by taking her stallion in her ass balls-deep, feeding her foal and subsequently goes to bed, in order to rest for her first day as level 9.

X. The level 9 of sister Mary

The next morning, she receives a group of masters that have her ride their cock while taking her stallion in the ass. However, she has progressed to the point where she struggles so little that she enjoys herself so much that she comes more often than her masters.

Once she is through with them all, they take her to the stable for the first time. She knew that her stallion spends the night there, but had no idea what other horses there were.

To her surprise, she finds that many of them are smaller. She is first introduced to a pony, with a 20 cm (7.9 inches) penis, which she can easily take in her pussy. She initially loves being able to fully take a horse in a hole other than her ass, and soon after climaxes from the new experience. However, she eventually is rather amused by the thrusts of the cute creature that are timid compared to her stallion. Nonetheless, its tiny efforts do not stay unrewarded when it becomes the first horse that sister Mary manages to deepthroat under cheers of the masters.

At the next box, she finds an equally cute animal in the form of a donkey, sporting a 30 cm (11.8 inches) cock. Still, sister Mary has no problems taking it in her pussy and even manages to deepthroat it, earning her more applause.

With another load in her stomach, she is brought to another box, which houses a horse with a 35 cm (13.8 inches). This one now manages to hit her cervix and not too softly. But sister Mary is too excited to let that deny her another orgasm. Once she has calmed down, she gets on her knees and tries to get its cock in her mouth. Due to its tapered shape, she gets most of it in her throat, but just can’t get the last 5 cm in. Still trying to impress her audience she keeps forcing it further down. However, even after the horse came down a second time down her throat, she can’t get it all in. She would have continued trying, but the masters stopped her, to give the horse a rest and in order to bring her to the next box.

Herein is a slightly larger horse, which does not look too different, but she is slightly suspicious about the masters appearing more quiet than usual, when she approaches the new animal. Upon stroking the horse, she gasps with wide eyes watching a huge head emerging, followed by a thick shaft. At full size, its cock is only 30 cm (11.8 inches) long, but the circumference is approximately 40 cm (15.7 inches).

“Masters, will you look at the width of that thing! It has veins all over it as well!”

The masters are bawling and laughing, having hoped for such a reaction.

“Well honey, you showed us what you can do with your throat and ass, so we wanted to treat you to a nice cock for your pussy, hehehe.”

Sister Mary smiles while still stroking the fat member.

“I want to say I love it, but I haven’t tried it yet. May I, master?”

“Go ahead, we insist!”

She crawls under the horse and guides the big cock head to her pussy. The horse plunges forward, trying to enter the little girl, but can’t get it, causing her to get pushed forward a few steps. She stands there confused, scratching her head and tries again, however, angling her pelvis in a better way before touching the cock. This time, the horse manages to push half of his shaft inside sister Mary, but she has to balance slightly forward, trying to balance out the big insertion. She had bigger toys up her pussy, but never a cock of such a size and attached to an animal 10 times her weight and power. Nonetheless, she wants it all and gradually inserts more each time the horse plunges into her hungry pussy. Her moans are getting louder and louder, culminating in a big groan when the last inch is buried deep inside of her. The horse does not give her much time to rest and starts pumping in and out of his new fuck hole. Sister Mary closes her eyes and focuses in order to adjust to the large piece of meat inside of her and to enjoy this new experience. Having a well trained pussy that can accommodate such a wide cock provides a lot of satisfaction to her as well as the horse. She can feel the animal pumping faster, enjoying the capable human hole, but it is still not enough for her. She starts to back into him, matching his movements in order to smack her ass against the base of the girthy member. Her enthusiasm fires him up, causing him to plunge more furiously into her. She wins the race to the climax when she moans loudly, barely being able to stand her legs, while her body generates waves of pleasure.

Not long after, she can feel him filling her up with his seed. However, neither of them stop fucking and the room is soon filled with more groaning and slapping noises, while he pumping half his load out her ravaged pussy. Once they both come a third time, she finally pulls out and gets to rest for a few minutes on a chair, with a smile on her face and horse cum oozing out her pussy. After she cleans herself up, she is led to her last box.

When she looks inside, she gasps with wide eyes. It’s her stallion and her sire, what a surprise! After she gets to cuddle with the wolf for a bit, she is asked to take them both at the same time.

She starts by gently sucking them both to full length, but taking a bit more time with her sire, to savor the rare moment with her old lover. Then she lies the sire on his back and straddles his cock, however, this time in her pussy. Once her pussy lips close around the knot, she grabs the cock of her stallion behind her and slowly pops him in her ass. With her sire stretching out her pussy, it is more difficult to push him in her ass. For a moment, it gets easier when the head passes her sire’s cock, but then the tapered horse cock begins to stretch her sphincter at the base. Her breathing intensifies, and her holes struggle to accommodate two such huge objects. But her desire to fuck them both is larger than her pain and she keeps taking what they offer. Once her stallion is at the hilt, she lets out a big groan with her eyes rolling to the back of her head. Her holes are bursting with cock and she can’t get enough of it.

That is, until the horse starts thrusting. With her pussy stretched so much, her body has less wiggle room to accommodate to her ass being moved by the horse cock. Sister Mary promptly tries to hold onto the bar above her and places her feet firmly on the ground, but it takes her a few moments to angle her body properly between her anchor points and the member thrusting in her ass. Once she is in a better position, her groaning slowly transitions into moaning. The audience is holding its breath, watching her trying to cope with both her lovers. She tries to enjoy her holes being stuffed, but she also has to focus a lot on her position. From time to time, a powerful thrust throws her off and she has to quickly adjust herself in order to reduce lateral forces on her holes. Slowly but surely, her body is settling in and starts to build towards a climax with every thrust in her ass. Her breathing gets heavier and her head rolls back, while her legs are starting to tremble. When she can feel both cocks starting pumping cum into her stretched holes, her body is pushed over the edge and erupts in a climax accompanied by loud moans from the exhausted girl.

The masters insist that she sucks them all off, while continuing to get fucked by the sire and the stallion. Luckily it does not take her too long to get them all off, as the show they just witnessed had made them all rock hard. Once everyone is through, she gives an encore with one more orgasm and then stands up with a smile, pulling out the massive cocks, emptying her holes into a bucket, and swallowing her lover’s seeds.

From then on, sister Mary is brought to the stable from time to time, which she can handle better and better with time. However, she is also introduced to a horse with a 55 cm (21.7 inch) cock that she tries to take in her ass, but it is just too long. As that depth would be required to pass level 10, she keeps trying and even asks the masters to take her to the horse, but she seems to only make barely progress. Similarly, when she tries to insert toys in her stretching routine, she seems to hit a barrier. Eventually she gains 2 more centimeters, but can’t get any further.

After three weeks of getting to know the horses in the stable, she is visited by father John, who announces to her that she will visit other institutes.

“We have now finished a plan for your three week exchange program. You will fly with a private jet of one of the masters to Asia, where you stay for a week. Then, a second master will fly with you to India for a second week, and a third master will fly with you to Africa. Afterwards you come back here.”

“Asia, India, … what are those, father John?

“They are other parts of the world. We have institutes with sisters there as well, but with level 9 and 10 sisters being more rare, we have exchange programs so more masters can enjoy them. Therefore, you will fly there.”

“Father John, what do you mean by flying? How am I flying with a master?”

“They have machines that can fly, they are called airplanes. Maybe you have seen objects in the sky that make long clouds? We auctioned off the flights among masters that have such airplanes. They will bring you there and in return get to do with you whatever they want during the flight.”

Sister Mary listens with wide opens eyes.

“These are machines that can fly? I can travel with such an airplane? That is incredible!”

Father John is slightly annoyed having to listen to her excited ramblings.

“Sure, but the main goal is to serve the masters in the other institutes. It will be the same schedule, so keep training and serving. Expectations are high and poor performance reflects badly on our institute.”

She composes herself promptly.

“Of course, father John. How should I conduct myself?”

“Don’t talk back, do as you are told, be humble, and don’t give up when it gets difficult.”

A quick nod shows him that she understands. Fearing that she will freeze up over there, he rolls his eyes a bit and clarifies.

“But you can also enjoy yourself and give an entertaining show.”

She smiles back at him, but stops when she notices that it annoys him.

“Tomorrow morning, your first master will pack you up and drive you to his airplane. Be safe.”

The next morning, she is sitting on her bed in anticipation, barely able to contain herself. When her first master comes in, she asks immediately.

“Welcome, master! Do you have a flying machine? Am I going with you?”

“Hahaha, yes I do and you will fly with me. But first, I need to put you into my hand luggage.”

An organizing sister rolls in a trolly with a rack, puts it on the ground and leaves again. He takes two boards from the rack and attaches them around her breasts. The combined boards form two round holes in the middle, through which her tits extend. The holes are smaller than her breasts, which means the board is trapped between her body on the one side and her tits on the other side. Sister Mary then has to put the board around her breasts horizontally on an elevated frame on the ground and then arch her legs back over her shoulders. As a result, she is doing a chest stand on top of the board, with her tits hanging below the board. Bending her body would generally not be as difficult, but she still has the 90 cm (34.4 inches) but plug in her ass, which makes it difficult for her guts to stretch.

Once the soles of her feet are on the board, she puts her arms around her legs and a lid is placed over her, confining her immovably inside. The only reason that she does not panic is that she is not trapped in darkness. The lid has recesses along a line, which keeps her face, ass, and pussy uncovered.

Two men pick up her box, rotate her upside down, so her tits are at the top and place her on the trolley, with which her master can comfortably pull her, by her tail plug, towards his limousine. Inside, the box is mounted at its side onto brackets from the roof that hold the box at its center of gravity, which now allows the master to easily rotate the box around an axis parallel to her shoulders.

As soon as the limousine sets off, he gives her a first spin, causing the disoriented girl to scream as she rotates a few times.

“Let’s see with which side I will play first.”

The box eventually stops with her tits pointing downwards and her mouth facing her master.

“It seems that lady luck says, you suck me off first. Come here.”

He operates a machine that drives the box over to him, until her mouth moves onto his cock. With her head locked in place, she can’t adjust her position and he has to move the box into the right spot. She dutifully gobbles him up and massages his cock with his tongue. Despite her best efforts, her master gets bored after a while and rotates the box further until he reaches her pussy, which he can barely enter, with her body compressed inside the box and the plug in her ass taking up most remaining space. Ignoring her groaning, he just pushes hard enough until his cock is fully buried in her tight pussy.

He then rotates the box a bit more until her giant tits protruding out of the box are right in front of him. Despite her comfortable pose, she enjoys having him fondle her nipples, which eventually harden and extend from her giant spherical tits. She jumps in surprise when she feels a sharp pain in one of the nipples, but soon relaxes after the initial shock. Her nipples developed quite masochistic tendencies to the point that she loves having masters pierce her nipples. Every needle poking through her flesh results in a small moaning out of the box. While her master initially enjoyed the slow torture, he has to speed up, as the aroused girl in the box starts to emit milk from her breasts.

Once every nipple is adorned with 10 needles, he attaches a ring between each tits and its needles and turns her around, so her tits are pointing downwards again. This allows him to attach a metal bucket to each ring, which starts collecting sister Mary’s milk. Her pussy doesn’t stay empty for long and he jams a huge 25 cm (9.8 inches) toy inside. It takes him quite a while until he manages to get it in, but once it is inside, he switches it on and it starts to vibrate violently. However, this seems to do the trick, as he can soon after hear moaning from the box and more milk trickling into the buckets. He puts his cock into her mouth again and leans back.

“Get to sucking, my dear. This is a two hour drive. I’ll switch off the toy when we are there, but if you manage to fill the buckets, I’ll switch it off earlier, hehehe.”

It turns out he underestimated his slave, as 1.5 hours later both buckets start to overflow. However, when he is about to switch it off, she says that it is ok and that she can take it. As a reward for her good behavior, he removes the lid once they are at the airplane, so she can unfold herself and stand up, allowing her to walk around the private jet that she was so curious about. However, she still had to wear the board around her tits and the buckets full of her milk dangling from the needles in her nipples. After walking around the airplane twice, her nipples start to hurt and they finally board the plane, where her tits are finally released.

For the flight, her master has invited 20 friends who got to enjoy the eighteen year old for the entire flight. But it turns out that she enjoyed them even more. After four hours, every man’s balls were drained, including the ones of the pilots and a friend’s dog who never got to fuck a human before. For her efforts, they give her the offer of a 30 minute break to look out the windows and to visit the cockpit, which she promptly accepts. But after 15 minutes of satisfying her curiosity, she prefers to satisfy her body and resumes fucking the men.

When they land in Asia, she is put back into her box and driven to the institute, where she is greeted by father Tian, who leads her to her chamber. It has luxurious furniture, with wooden frame ornamentations, exotic plants, and walls decorated by fans and ancient paintings. Sister Mary is mesmerized by the beauty of a culture so foreign to her.

“Sister Mary, your seven days with us are already completely booked out. We have the same schedule that you are used to. You will receive your first master tomorrow at 9 o’clock. As an arriving exchange sister you have the right to request sex with the father of the institute. Do you wish to claim your right?”

“Yes, father Tian, yes, yes, yes!”

Just like father John, father Tian is a tall muscular man, with a giant cock that sister Mary eagerly sucks into her throat. She takes him into every hole, coming many times over. Once she has swallowed his fourth load, the session is over. While she is still stretching out on her bed after a great fuck, he gets up and opens a second door in her chamber, whereupon her foal is trotting inside. She quickly gets up and hugs her little baby, which starts sucking on her tits.

“You can finish feeding the foal in this room, but in the future, please do it in the stable outside.”

“Stable? Father Tian, did my stallion come, too?”

“No, only the foal, because it is imprinted on you. But don’t worry, we have horses here as well. Good night.”

The next morning, she is greeting six masters at once, of which only one spoke English. Luckily, she soon finds out that translation is not required as long as she eagerly pleases any cock that she touches. After swallowing all their loads and letting them fist her holes for a bit, she is let outside to find a huge horse, just like her stallion at home. Without much hesitation, she strokes and licks his cock until it grows to a 50 cm (19.7 inches), which she pops in her ass.

Moments later, the crowd is cheering at the tiny girl getting ravaged by the massive member. The masters take turns prodding her stomach, feeling the horse penis bulging out the front of the girl’s stomach.

Enjoying all the fascination of the masters, she whistles for the foal, which walks over to her mother, unconcerned about the ass destruction happening on the other side, and starts drinking. The audience gasps loudly and is taken in by the show. Once they see her orgasm, they start jumping around and applaud the little girl. After draining the stallions balls twice with her ass, she pulls him out and gathers her guts contents in a bucket to be downed in one go.

For the next two days she barely had sex with a human, as every master wants to see the little girl get fucked by horses. Her ass is trained enough to take the pounding, but at the end of the day, her stomach is overflowing and bulging. Once she had drained the balls of a stallion, they just exchanged it with a new one. Every time she is close to vomiting it all out, but keeps fighting through the entire day, due to her promise to not disappoint father John.

Her tenaciousness pays off, as on the last five days, the masters had seen the show and now wanted to fuck the girl that had fascinated them so much. In those days she also got to meet sisters and brothers of the asian institute. Sister Mary was enthralled by their immaculate porcelain like skin and thick black hair. While most brothers are as muscular as the ones at home, a few of them have more graceful and delicate bodies, a variety that she enjoyed to the fullest.

However, under the skin, everyone is just the same, with massive cocks, huge loads, big tits, and infinitely horny. Sister Mary indulges in endless orgies with countless orgasms and bountiful people to please. One thing that she enjoyed the most in Asia are the enthusiastic crowds that appreciate and reward her efforts with applause and marveling gasps.

But time flies when having fun and when the week is over, she is put into a new box to be shipped to her next flight. This time, her legs are locked behind her head, wherein her tits are again extending through a board in front of her. However, the box only reaches up to her neck and down to her waste, keeping her head and her pelvis exposed. This time, her master does not torture her tits, but her ass, by pulling out her tail plug just to reinsert it. With her body folded onto itself, her intestines are routed differently as well as pushed together. As a result, the toy keeps hitting her inner walls, when her master tries to insert it in her ass. The box does not allow her to move her pelvis, so all she can do is change her guts by breathing and by screaming if the toy hurts her insides.

After 20 minutes of trial and error, the toy is finally fully inserted. Sister Mary breathes a sigh of relief, but groans in pain, when the master forcefully pulls it out again. An hour later, her intestines have properly aligned so that the insertion can be done relatively painlessly, at which point the master stops having fun.

He inserts a conically shaped dildo into her pussy, which inadvertently slips out of her compressed pussy. Once he makes sure that the toy does get pushed out, he attaches two wires to the toy and hooks them into sister Mary’s nipple piercings. Then, he attaches a third wire between the toy and a ring on the back side of the box. Her pussy now keeps pushing out the conically shaped toy and therefore generates a strong pulling force on her nipple rings. However, the nipple rings can’t pull out the toy, as the toy is also pulled towards her ass crack by the third wire. Once he makes sure that sister Mary’s pussy is inflicting enough pain on her nipples, he presses a button and the toy starts to vibrate.

Her groaning and moaning is promptly silenced by his cock in her mouth. In the next hour, she manages to drain his balls two times. But much to the surprise of her master, she came about ten times.

On the flight, he has to admit defeat again, when sister Mary again manages to please everyone on board before they land in India.

Father Kama welcomes her and shows her to her new chamber, which is decorated with marble walls, beautiful carpets, intricate gold ornamentations and cushioned furniture. The pillows feel so comfortable to hold into while father Kama plows her in the new bed.

Like last time, she spent the first two days mostly getting fucked my monstrous horse cocks, filling her to the brim with cum. Afterwards, she gets to fuck a lot of the masters. She was pleasantly surprised by how friendly many of the masters are, how many stories she got to hear and how much she connected with them on an emotional level. Getting thoroughly fucked by a man after befriending him, added a taboo that she enjoyed a lot. It seemed that domination covered a wider spectrum. One moment, she is requested to dominate a man or breastfeed him in a motherly manner and an hour later she gets destroyed by an avalanche of huge cocks. Oh, she had so much fun!

But alas, the week is over and she is put in the next box for her third flight. The box has a long narrow portion housing her legs with leather straps that hold her legs in a split position. The narrow portion is connected to a flat portion that contains her upper body, with her tits extending out the front and her head extending out the top.

To each of her nipples is attached a bucket with a hole in the bottom that is connected to a tube. The first tube leads to her pussy and the other tube is inserted into her ass, wherein both tubes are attached to tight rubber pants around her crotch.

Once the car sets off, her master reveals a big jar of cum above her and opens a valve causing the liquid to slowly drip into the buckets.

“These are 10 Liters (2.6 gallons) of horse cum that will drop into the buckets at a rate of a bit over 8 ml per second. That means that in 20 minutes, the jar will be empty. Do you feel the weight on your nipples? Not easy, right? But the buckets are not filling up yet. It will keep draining into your ass and pussy. But once they can’t take any more, the draining stops and it accumulates in the buckets. Let’s see how well trained the holes of a level 9 slave are.”

The buckets and the tubes alone have a lot of weight that her nipples have to support, but the pouring cum makes it noticeably more difficult. Sister Mary can already feel the cold liquid reaching her crotch. The cum now accumulates in the tubes, adding gradually even more strain on her tits. However, a feeling of pressure on her crotch is momentarily distracting from the pain in her nipples. A hydrostatic pressure keeps building up until cum starts gushing into her holes.

After 10 minutes of feeling her insides ballooning up, she can sense that her holes will soon not be able to take up more of the heavy liquid. At around 14 minutes, the cum level is rising, nothing is getting into her ass and pussy anymore. She can feel huge pressure in her body, but can’t let any of the liquid out due to the tight rubber pants. The pressure keeps building up, but what concerns her even more is that the buckets now fill up, pulling down more and more on her tits.

At the 20 minute mark, the jar of cum is empty and about 3 liters of its content has made it into the buckets, causing sister Mary to groan in pain.

“That is quite impressive I must say. I expected it to spill over. I don’t know if your tits can take this for another hour. Let me give you a little bit of help.”

He takes two straws and places them into each one of the buckets.

“There is still some space in you, right?”

Without any hesitation, sister Mary quickly takes the straws in her mouth and starts sucking up as much as she can. She slows down after the first liter and needs to take a break after the second liter, but after 15 minutes of slurping, heaving, and belching, the master can hear air sucked through the straws. Sister Mary lets the straws drop from her mouth and throws her head back in exhaustion.

“You actually did it? I did not expect that. I’m impressed. You know what, I think I can even let you out of the box for the rest of the ride.”

He turns two valves at her rubber pants, closing the opening to the tubes, allowing him to remove the tubes, with her wearing only the closed of rubber pants. Then, he opens the box and lets her come out. Her stomach is bloated like a balloon bulging to all sides.

“That is almost 10 liters of cum inside of you.”

“Can I lay down, master?”

“Let’s add one more load, and you are free to rest.”

She catches her breath and blows him until she can add another load to her collection, whereupon she can finally lay down and falls asleep.

When she is woken up at the airplane, she is allowed to hurry to the bathroom, where she voids liters of liquid from her body. She is even allowed to clean herself in the shower of the private jet. Once she steps out she is already yearning for more cocks, which her master’s friends happily provide.

In Africa, she is fucked by Father Samedi in her new chamber with beautiful curtains, plants, and furniture having the rarest wood grain. While choking on father Samedi’s big cock she looks at the marvelous fur decorating the floor and wonders what animals they are from.

As usual, sister Mary is almost exclusively fucked by horses in the first two days. One horse has a slightly larger cock with a length of 52 cm (20.5 inches). The two extra centimeters cause her a lot of struggling, which she manages to hide for most of the time. She ignores the large bulge below her ribs and keeps smashing her ass into the horse. She even manages to getting herself off and give the same show that she did in the other two institutes to the same applause. The size mismatch went unnoticed until father Samedi notices her lying in the fetal position in her bed by the end of the second day. After inquiring about her wellbeing, he apologizes for the mishap and has her checked by a doctor, who concludes that she is bruised, but suggests resting for a day.

“Thanks doctor, but I think I can continue. Father Samedi, there are masters that want to see me tomorrow right?”

“There are, sister Mary … ”

“I won’t disappoint them then. But if you have something against the pain, doctor? Huh, I wonder if there are level 10 sisters that can take a 55 cm (22.7 inches) cock in their ass. But my inability is not the fault of the masters, so let’s give them a show.”

Father Samedi smiles and instructs the doctor to do as she said.

The pain medicine works great as she is in perfect shape the next day to fuck all the masters with enthusiasm and pleasure. However, in the afternoon, she is led to the stable again, where the last two days a stallion had hurt her so much. She follows along calmly, but is nervous inside, should she try it anyway? She must, for father John. Once inside she is surprised to see father Samedi. He asks the master and sister Mary to sit down.

“Sister Mary was supposed to get fucked by the horse for you, mister. But I made a mistake, which damaged her insides. I apologize for my error and hope that I can offer you our level 10 sister as a substitute, obviously free of charge.”

“Ah man, that sucks. I wanted to see the young girl get fucked. But a level 10? Free of charge? I think I can forgive you old man, hehe.”

Father Samedi claps his hands and a woman walks in slowly with the elegance of a panther. Sister Mary notices a sparkling diamond collar around her neck and a 1 meter (39.4 inches) dragging along the floor. However, the first thing that caught her eye were her gigantic 5000cc tits, forming two majestic spheres swinging with every step. Her smooth black skin creates a mesmerizing contrast of light and shadows, further accentuating her perfect body. Oh wow, look at her huge ass, it’s muscular, yet soft. The skin is firm, but ripples with every step. Sister Mary feels the urge to bite it, but quickly dismisses the silly thought. The woman stops in front of the master and kneels down.

“Greetings master, I wish to serve you.”

Before the master can say anything, father Samedi addresses her.

“Sister Anaisa, please take your stallion in the ass.”

“You know I love that, father Samedi.”

He then turns to the girl next to him.

“Sister Mary, you have performed dutifully, despite my error. Yesterday you were wondering whether a sister can even take 55 cm (21.7 inches) in her ass. Allow me to make it up to you by giving you the opportunity to watch our level 10 sister Anaisa.”

Sister Mary watches carefully as sister Anaisa approaches a monster of a horse that sports a throbbing 55 cm (21.7 inches) member. She puts the head in her ass and steps a bit forward, allowing the stallion to only thrust in more than half of the shaft. She closes her eyes and gradually shifts her body by arching her back and pulling up the left side of her upper body. After a few small steps backwards, almost all of the horse’s cock disappears in her ass. Then she takes a few breaths, adjusts her body a bit more and resorts to small breaths with short intervals in order to keep her diagram at an elevated position. Now she takes one more step backwards and everyone in the room can hear the horse smacking against the big ass of sister Anaisa.

Sister Mary is cheering and runs up to her to get a better view, shaking her head in disbelief. After watching her get fucked for a while, sister Mary walks up and starts caressing and sucking on the tits of the ass-fucked girl. After a while, her eyes roll up and she comes with the entire horse cock buried in her guts. Sister Mary is awestruck and excited.

“That was amazing! I can’t do what you just did … but, maybe I can try the horse from yesterday. If I apply your technique … it should be possible. Father Samedi, may I ask that yesterday’s horse fucks my ass?”

“I’ll allow it. It’s what your master had originally requested anyway.”

Under the guidance of sister Anaisa, she learns to adjust her body positioning and breathing and carefully backs into the horse fucking her ass. She gasps when she can feel the stallion slapping against her ass cheeks without feeling significant pain. Sister Anaisa returns the favor and stimulates her nipples until sister Mary succumbs to her victorious orgasm.

The final days in the African institute were filled with gangbangs and lavish orgies. Rarely ever was she fucking only one person. She often starts with a sensual massage in order to tease out a build up arousal that explodes domination that she eagerly submits to. She loves how many masters go wild and animalistic on her, expressing their lust for her body with powerful and intense sex sessions. However, many orgies end in laughter and cheers when they realize that the little eighteen year old girl can go longer than all the men lying exhausted on the floor with their drained balls.

Nonetheless, the week eventually ends and she has to say goodbye to the masters of Africa. When she arrives back home, father John welcomes her and commends her about the praise he had received from the three institutes, especially from Africa. Her hearts jumps with excitement hearing that she has done well for her beloved father John and even cries tears of joy when she gets to fuck him upon arrival.

In the next week she settles back in the routine of her home institute. Having missed her dear stallion, many masters allow her to her stallion, which she can now easily take in her ass even with a stuffed pussy.

One morning, she is led outside the stable where she sees three masters with brown clothing and guns holstered around their back. She is instructed to attach leather straps to her arms, legs and body, which are tied together until she is frogtied with her bent legs spread and her arms behind her back. In this position she is laid on a bench, allowing her stallion to penetrate her ass. Once his cock is fully inserted to the hilt, sister Mary is attached by her leather straps to a saddle of the stallion. As a result, she finds herself hanging as an undercarriage under the belly of the horse with its cock fully buried in her ass.

One of the men jumps up on the saddle and instructs the stallion to walk forward. After a while, they switch to trotting and sister Mary can feel the cock in her ass swaying from side to side. Next, the horse is cantering and she can feel the stallion digging around in her guts. She can handle it, but is dreading what she knows to come next. The man squeezes his legs and the stallion starts galloping. The hinds legs of the horse are now moving in parallel, which causes the cock in her ass to quickly thrust in and out. At the same time, the disoriented girl can only see ground passing by below her, not knowing where the horse in her ass is going. Unconcerned with her screaming, the master rides a few rounds until he goes back to the other men.

“What do you think gentlemen? It seems the horse can move fine, right?”

“Yeah, and the girl is screaming, so she is still alive, haha. We can set off soon then.”

“Masters, what do you mean? Where are you going? Are you taking me with you like that?”

“Yeah, we are taking you with us to a hunt.”

“What are you hunting, master?”

“You will see when we get there. Where is the dog?”

A few seconds later, sister Mary can see her sire brought in. When she calls for him, he comes over, recognizes his bitch, and licks her smiling face. When her foal comes over, it uses the opportunity of her hanging tits and starts drinking, whereupon the men decide to bring the foal with them as well. In order to ensure good milk production, they insert a large vibrator in her pussy and switch it on. Two more horses are brought for the other men and the gang heads out.

At first, sister Mary is screaming, scared to fall off the horse, about rocks in their path hitting her, or the cock in her ass slitting her in two. But after some time, her worries don’t come true and she gradually gets to relax, enjoy the outside, enjoy the sun, enjoy the cock in her guts, enjoying the wind, enjoying the dildo in her pussy, enjoying the ride with her dear stallion, sire, and foal.

After 10 minutes she comes her first time, which continues into more and more climaxes. At some point, the masters let the foal drink so as to not waste the milk that the horny mother is spilling on the ground. A bit later, the wolf seems to pick up a scent and the men follow after in full gallop.

After some time, they reach a dense forest, where the sire eventually loses the scent. The men continue until they reach a grassy clearing and set up a camp. Sister Mary gets a bucket to deal with all the cum her stallion had pumped into her during the ride and then proceeds to fuck her masters until they drop exhausted into their camping chairs. While they rest, she is to satisfy the remaining two horses and the sire. Sister Mary feels a sense of pride when she realizes that her stallion, who she can already handle so well, has the largest cock of the three horses. But she keeps the thought to herself and dutifully tends to the animals.

Once she is done, they instruct her about the hunt.

“We had them release five wolves into this private land to hunt. We have tracked them down to this forest, but now we have to lure them out with some bait.”

“What is the bait, master?”

“You are, sweety. You will go out with that foal of yours and look for them. And once you find one or it finds you, hehehe, you hold it in its place and send the foal back to us. We will then come and shoot it.”

“… but, how can I hold it, master?”

“They are wolves from the institute, so you just gotta keep ‘em busy. I’m sure they have fucked you already at some time in the past.”

“Oh no, you are going to kill them, master?”

“Nah, we use tranquilizer guns. Killing them would be too expensive.”

“How can I find them, master?”

“Make them find you, didn’t the entire squad here give you a lot to drink?”

Sister Mary slowly understands, nods, and sets off into the forest with her foal at the side. After marking a territory, she keeps walking around, trying to get attention. Suddenly, she hears some rustling and turns around to see one of the wolves approaching her, sniffing the air. Sister Mary sends the sire away and gets on all fours, trying to lure the animal closer. The wolf seems uncomfortable and gnarls at the intruder. It takes her a few attempts until she can finally pet him, slowly earning his trust. Eventually, she gets lower, manages to lure his cock out and starts blowing him, which finally calms him down. Once he is ready, she guides him behind her and he mounts his willing bitch. After taking him in her pussy for some time, she pulls him out and puts him in her ass, all the way until even the knot is inside of her.

He already shot two loads into her when his keen ears hear the men approaching. Sister Mary notices that he pauses and quickly guesses that the wolf is growing suspicious. Before he can run away, she quickly clenches her ass as tight as possible, trapping the animals like a venus fly trap. He can almost pull out before she manages to grab his hind legs, pulling him deep into her ass. With every passing second, the lust in the beast transitions to aggression and he starts growling at the temptress. Sister Mary now has to fight an animal heavier than her, avoid its attempts at biting her while holding onto it with her hands and ass. It wants to go right for her leg, when a shot gets fired and after a faint howl, it collapses to the ground. Sister Mary lets go of its legs and lies next to, catching her breath, still with its cock in her ass.

The men hogtie the wolf, put it on their horse, and go back to their camp after instructing sister Mary to get the next one. Her legs are still trembling as she stands there with her foal next to her, watching them leave.

She keeps looking and eventually finds three more wolves to seduce until her master can shoot them down. However, her heart skips a beat when she sees one of her grown cubs slowly approaching her. They had grown apart a bit for a while, but when all by himself, the wolf joyfully trots to his mother and licks her face. Sister Mary indulges for a while in the happiness that they feel for each other in their reunion, postponing as long as possible her eventual betrayal against her little baby.

Unlike with the other wolves, she takes her time, caressing his fur and gently sucking his cock. Only once he down his first load does she send her foal to the men. After 15 minutes of enjoying some intimate time with her cub, she can feel that he is startled by approaching footsteps and starts holding him down. This time, the wolf does not growl or snap at her, but just howls, giving his mother confused looks when she stops him from getting away. Eventually she turns her face away until a shot echoes through the forest, silencing the animal.

“What the fuck is wrong with this crybaby? He didn’t have any fight in him. How disappointing!”

“Master, this is one of my cubs. I nursed him when he was a baby. So he trusted me.”

“And you betrayed him, that’s hilarious, what a terrible mother! Now get your son’s dick out of your ass, so we can tie him up, it’s getting late.”

The men are still laughing and imitating her cub’s howling while she watches them ride away. Sister Mary consoles herself by feeding her foal for a bit, but her tits are eventually drained. Her milk production requires her to eat a lot and she hasn’t eaten in a while. It is indeed getting late.

It doesn’t take her too long until she finally finds the last wolf, but he acts differently. Instead of standing at a distance in mistrust, he approaches her confidently. Does he know her? He is none of her kids. Wait, he is not going for her, he wants to kill the foal!

She pushes the foal away, screaming for it to run and sprints towards the attacker. When they collide, she is pushed to the ground by the heavier enemy, but she manages to hold onto the wolf’s collar. While he drags her along the ground, she keeps screaming at the foal to run, which is sprinting away in full gallop. Once he realizes that it got away, he turns towards the mother instead. He quickly spins around a few times, rotating her wrist until she has to let go.

She does not regret saving the foal, but has no plan on how to survive this fight either. Is there anything on the ground? A stick, grab it, but don’t lose eye contact. Got it, what now? What is he going to do? Where did all these wolves bite her during sex? The neck. Get the stick in between your neck and him, hold it with two hands, maybe you can divert his bite. He threw me to the ground so easily. I need to stand more stable. Walk to the tree, get it behind your back, don’t look away. What’s the plan? Too late.

The wolf jumps at her and through sheer luck, she manages to block his bite with the stick. She manages to hold him off with the tree on her back, but he starts clawing at her with his paws. But sister Mary has legs as well and manages to kick the wolf between his legs onto his massive balls. With a loud howl, he lets off her and lays down for a moment. In this short opening, sister Mary pushes her stick through his collar, hoping to get a better grip. However, the wolf starts snapping after her, causing her to lose hold of the stick. Having just disarmed herself, she panics and runs away. However, her large tits don’t allow her to run for long and she tries to hide between two rocks right into a deadend. When the wolf runs around the corner, she braces herself to fight to the death with her bare arms.

However, the wolf howls and is stopped in his tracks. The stick is still threaded through his collar and is wedged between the two rocks. He is stuck! Quick, fixate the stick somehow. Sister Mary picks up heavy rocks behind her and places them on the stick, burying both ends below them.

When the men find her, they see an exhausted girl with bleeding from several bite and scratch marks sitting next to her prey.

“What the hell happened?”

“The wolf tried to kill my foal, but I stopped it, so he attacked me, master.”

The men carefully approach the wolf’s body and shoot it when they realize that he is still alive. The foal walks past them and licks the wounds of her mother, while the men look at the little girl in disbelief.

“Wait, you fought the wolf and defeated it? Without guns? How is that possible?”

“I did not think about defeating the wolf, only about saving him … look, master, the foal is alive… I’m a good mother …”

The three men are speechless and drop their guns in order to help the sniveling girl up. They put her on their horse and bring her back to the camp, where they clean her wounds and give her their food.

“Listen, kid, can we keep that incident with the wolf between us?”

Sister Mary pauses for a second, but gives them a nod.

“Thanks, you are a real trouper… but the thing is, if we don’t ride back with the horse cock in your ass, it may raise suspicions… soooo, is it ok if we hang you under the horse again? We will go slow this time, I promise.”

She pauses for slightly longer, but nods again with a small smile.

On the ride back, her body aches, but surrounded by her many family members, her soul enjoys a fleeting moment of peace.

Sister Mary kept practicing and with the tricks she learned in Africa, she even manages to meet the depth requirements for level 10. On day 330 of her stay at the institute she passes the test by taking in her ass a circumference of 50 cm (19.7 inches), a rigid depth of 55 cm (21.7 inches), and a flexible depth of 100 cm (39.4 inches/3.3ft). Her pussy can take a circumference of 55 cm (21.7 inches) and a depth of 36 cm (14 inches).

Father John pumps each of her breasts to 4500cc (inflatable to 6000cc) and attaches her final collar with most brilliant diamonds. Her new chamber has multiple rooms, with grand chandeliers, a fireplace, a whirlpool and even an aquarium. But sister Mary mostly cares about pulling father John into bed and getting plowed senseless. In celebration of her achievement, he pampers her with a one hour session that still flies by too fast. Once she comes back to her senses, she asks about a peculiar device opposite the bed that she had ignored until now.

“This is a streaming setup with a camera, a microphone, and a computer. This allows you to give a show to people all over the world. From now on, your afternoon with masters ends one hour early. Instead, you will go online and do what the audience wants from you.”

“What do they want me to do? They only watch me? I can’t have sex with them.”

“They can buy tokens, which they can give to you for doing tasks. That can be undressing, masturbating, lactating, using a machine, getting yourself off, or even requesting brothers, sisters, or animals to have sex with you. If the demand is high enough, we will increase the prize and the duration of the streaming sessions.”

“Undressing? I haven’t worn clothes in a long time, father John.”

“It is one way to tease them. Eventually, you will have to find out what makes them spend the most. Some want to see you pleasure yourself, some want to see you in pain, and some want to talk with you.”

“Talk with me? About what?”

“Only talk about you or them. We monitor the chat and the stream, so be careful. Don’t talk about the institute, or anything personal about the masters or me.”

“… yes, father John.”

“However, today, you won’t stream, but observe sister Alison who has years of experience with it.”

In the evening, she spends one and half hours sitting on a chair outside the view of a camera, watching the level 10 sister perform for her audience. Sister Mary is surprised how the personality of sister Alison switches from a calm girl setting up her bed, dress, and toys to a highly expressive, outgoing, and energetic character that appears to always have an interesting response to the comments of her viewers. Once the stream is over, the smile is wiped off her face and she falls back exhausted onto her bed. Sister Mary is in awe.

“Wow, that was amazing! I thought you had so much fun… but I’m not sure anymore… “

“Hehe, thanks! It is a mixed bag, I would say. The adoration is intoxicating, but the audience always takes more from you than they give.”

“Is it… worth the effort, sister Alison?”

“You will have to find that out for yourself. But for me, it is.”

The next day, she ***********s a maid outfit from her closet, puts her toys on the bed, and sits there, waiting for a countdown on the screen before her. When it hits zero, she startles when she can see herself in one of the screens and pauses for a moment.

“Uhm… hello? Can anyone … see me?”

Her chat immediately fills with messages and she panics, not being able to read them in time. Once she tells them to slow down, her chat is spammed with laughing emojis, causing her to flush bright red.

However, she slowly gets into the rhythm of things. To her surprise, the most asked question was whether she truly is only 18 years old, whereupon she is showered with praise, which relaxed her a bit. Eventually, the audience starts spending tokens to undress the girl and to see her use increasingly larger toys. However, her stream is flooded with tokens so quickly that she has to switch to bigger toys before she can even insert the previous one. After half an hour, the chat has spent enough for making her fuck her stallion over and over for the remaining time.

Once the stream is over, father John comes in and explains that she was indeed quite the success and that they will already have to increase the prices for the next day.

However, the price hike did not deter her audience and after five days, she was the most expensive streamer of the institute and after ten days, her streaming time had to be increased to 1.5 hours. For her nineteenth birthday, she did a special 3 hour party stream, for which her sire and her four cubs were invited as well.

After a few days, she is summoned with nine other girls to a room, in which father John is announcing a tournament. Right next to him is standing Thomas, who recognizes sister Mary immediately from his first day at the institute, about 1 year ago.

** (1 year earlier)

Father John and Thomas leave the new room of sister Mary, who had just finished her rite of passage, still struggling with a 10 cm (4 inches) circumference toy in her ass.

They go to the office of father John and watch in one of many displays sister Ember and sister Mary receive their first master, wherein the latter one is facing more cruelty. Thomas almost feels a little bad for her.

“Wow, sister Mary pulled through, but that guy roughed her up a lot.”

“They it is good if they are challenged, Thomas. It allows them to improve faster, so they can reach higher levels.”

“How many levels are there? Level 2 already sounds tough, how many are there?”

“Ten.”

“So many?? What is a level 10 sister capable of?”

“Come, I’ll show you sister Bethany.”

Father John leads Thomas to a luxurious chamber, in which sister Bethany eagerly welcomes them.

“Father John, how nice to see you!”

“Come here and show me your tits.”

She jumps off the bed and stands in front of the two men, lifting her gigantic breasts towards them.

“Holy shit, they are massive. How big are they?”

“They are 6000cc each and can be increased to 7500cc with this gun, which evaporates a liquid in her implants for more volume.”

Thomas gasps when he sees the breasts swell to an even larger size.

“You may also notice that she has nipple piercing, which the sisters usually receive at level 2. At level 3 we also give them a clit piercing. They train to take gradually larger cocks in any of their holes. Go ahead, fuck her throat.”

Thomas takes out his 14 inch cock and enjoys being able to fully bury it inside a girl’s throat. After a few thrusts he unloads his first load in her stomach. Afterwards he fucks her in her pussy and ass with full force, amazed that the little girl can take him easily, even coming at some point. He eventually pulls out and makes her swallow another load, whereupon he proceeds to fist her pussy and her ass. Loving the sounds of her whimpering he keeps pushing his fist deep as deep as he can, until she surprises him with another orgasm.

After the workout he sits down to take a short break, while father John brings in a wolf. Thomas stares with wide eyes, watching her suck the beast and subsequently fuck him until she gets to enjoy another load.

“At around level 5, sister’s learn to drink urine. Thomas, would you like to piss in sister Bethany’ mouth?”

“Hell yeah, come here my little slut and be my toilet!”

She promptly crawls towards him and catches every little drop that he offers her. After some encouragement from father John, he shoves his cock down her throat and pisses right into her stomach.

“All sisters eventually can do what she has showed you just now. But only a few sisters eventually reach level 9 or even level 10. Come, let’s go to the next room and see what more Bethany is capable of.”

Thomas is surprised when he sees a tall horse, but quickly starts to smile at father John.

“Thomas, do you want her to get fucked by that horse?”

He nods quickly, still with a smile on his face.

“Go, tell her.”

“Sister Bethany, I want you to go get fucked by that horse over there.”

Moments later, they watch her stroke the horse cock to 50 cm (19.7 inches) and subsequently take full thrust thereof into her ass.

“And I want you to swallow its cum as well!”

After a while, the stallion speeds up and fills his little mare with his seed, which she collects in a bucket to swallow in one go. Afterwards she dutifully goes back to the horse and keeps getting railed in the ass. Thomas can’t get enough of the show and walks up to her, squeezing her nipples until she grimaces.

“Man, look at this slut going back to getting blasted in the ass. I love her!”

Father John walks up to the two.

“That is understandable, Thomas. She is your mother after all.”

Thomas looks in shock and lets go of her nipples.

“She is my what??”

“Your mother. She gave birth to you over 18 years ago.”

“This is my mother? You told me that she is not with us … because she is with another man!”

“Yes, she is fucking different men every day. Sometimes horses as you can see.”

Thomas realizes that she is still getting assblasted by the horse and tells her to get up and to go back to her room, where he sits her down for interrogation.

“Are you really my mother?”

“Yes, master.”

“and he is the father?”

“Yes, master.”

“Don’t … don’t call me master, please. You are my mom.”

Sister Bethany gives father John a questioning look, not understanding Thomas’ concerns. Their son is flabbergasted by the reaction of his parents.

“Mom, why are you in this institute?”

“I decided to stay here after my rite of passage, master.”

Thomas pauses for a moment, the gears are slowly turning.

“Mom … why … why did you have me with my father?”

She smiles and proudly closes her eyes.

“Because I won the tournament, master.”

Thomas now looks over at father John, who seems unimpressed by the family drama unfolding in front of him.

“What tournament is she talking about, father?”

“Every year, we hold a tournament for the sisters that have passed their first year in the institute. We harvest 76 eggs of the girls that perform the best and impregnate the eggs, to be carried to full term by the ten girls as well as additional women whose main job it is to birth new slaves. Each year, 60 girls and 16 boys are born and raised in our dedicated boarding schools, isolated from the rest of the world.”

“But I didn’t go to such a boarding school.”

“Because you were slightly different. For every male baby, we perform rigorous tests such as determining a polygenic score and a test of intelligence. Approximately every 20 years we isolate the boy with the best score and let him grow up in a normal school, in order to learn about the world. That is what happened to you.”

“Why isolate me? Why do I need to learn about the world?”

“The institute will eventually need a new manager, who is intelligent enough for organization and knows the outside in order to do business. And you are one of the candidates.”

“Candidates? What other candidates are there?”

“Send them in please.”

The door opens and six more men come in.

“One of you men will be my successor. The 76 eggs are fertilized by us. For eggs for each candidate and 20 by myself. Whoever fathers the girls with the highest average tournament results, will be the next manager of the institute.”

“But if all eggs are fertilized only by us then doesn’t this mean that all the slaves, all men and all women are …”

“One big family. That is why we call the girls ‘sisters’, the men ‘brothers’ and why I am called the ‘father’.”

Thomas looks at the many displays in the office, watching girls getting fucked and tortured by the masters.

“Why does it have to be a family? Why do these men fuck my sisters?”

“Thomas, have you never wondered why you are so tall and muscular? Why are you so good looking? Why do you have such a large penis with no refractory period? You have been outside the institute and seen these tiny men and ugly women. Your genes are on a different level. The institute has bred sex slaves for centuries and you see the result in the displays behind you. Women with otherworldly beauty, able to take cocks of horses and men looking like greek gods equipped with similarly large tools. And everyone has an insatiable lust for sex. This pristine gene pool must be controlled and not watered down. That is why it stays in the family. You look like these brothers, because you are one of them, but the smartest of them. Now it is your time to join us at the institute.”

Thomas sits speechless in his chair, trying to wrap his head around what he just learned.

“This is a lot to unpack, dad.”

“I know, I have seen this confusion six times before you.”

The other candidates are laughing a little, while father John smiles in the room.

“They all had their reservations, coming from the outside, where everyone has the same rights and everyone is treated equally. I can’t blame the outside for coming to this conclusion, because inferior beings seek protection from each other. But this does not apply to us. Will you stay with us?”

Thomas smirks at his family members.

“You got me convinced, fuck these morals, I wanna fuck as much as possible.”

The whole crowd cheers and hugs the new candidate.

“But, dad, just out of curiosity: I saw you gave these two girls the illusion of a choice. Did I even have a choice just now?”

Father John smiles and shakes his head, whereupon Thomas shrugs and proclaims:

“Anyway, who else here wants to fuck my mom a bit more?”

Everyone did.

**(back to the current time)

Father John addresses the girls in the room.

“Dear sisters. You all have been at the institute for almost a year, a time in which you were able to hone your skills. Tomorrow, we will hold a two day tournament to decide how well you have progressed so far. On the first day we will test how many cocks you can serve and on the second day, we will test how much your body can take. Therefore, you won’t be receiving any masters. Instead, you will come fetch you.”

The girls look in the room, looking at their competition. One of them is level 6, four are level 7, three are level 8. But they all look discouraged at the two level 10 sisters in the room: Sister Mary and sister Ember.

Sister Mary is surprised as well, as she had no idea that the others were so far behind. However, sister Ember looks confident and is the first one to say something.

“What is the prize for winning the tournament, father John?”

“The best five sisters will provide eggs for the next generation. 3 eggs from fifth place, 5 eggs from fourth place, 10 eggs from third place, 20 eggs from second place, and 38 eggs from first place. The lineage of the last five places will die out with them. I will see you tomorrow, good luck.”

The single level 6 sister wishes the ground would open up and swallow her up. Apart from the level 10 sisters, every girl starts to look worried. Sister Ember does not bother them, but gives sister Mary an evil look.

“You hear? Finally a competition with a proper prize. I can see it in your eyes, you want it, but you are scared of me. Will you lose to me again?”

“Shut up, you don’t even know what the competition is about, sister Ember.”

“Supreme confidence in your skills would not make you say something like that. Are you worried I won’t save you from the masters this time?”

Sister Mary’s mind blanks trying to come up with something witty to say, but sister Ember is already out the door.

The morning, they are all brought to a large room with ten beds and what appears to be hundreds of brothers standing to the side. On the other side of the bed are stands filled with masters. The tickets for the year’s event are quickly sold out despite the fortune that they cost. Father John raises his hands, signaling the crowd to quiet down. He explains that today’s event ends as soon as the first five girls have given up, wherein for the first round, every girl has to satisfy 50 men. The sister that reaches a score of 50 last, will be out of the race automatically. Once the women are in position, a loud siren starts the tournament.

Feeling not too much time pressure, sister Mary enjoys getting some action and takes in as many cocks as she can. While getting double penetrated and sucking on a third cocks, she takes a chance to look around how the other contestants are doing.

Sister Ember also has three dicks in her, but she furiously jumps up and down, trying to make them come as quick as possible. The level 8 sisters also take three men at the same time, but the level 7 sisters seem to struggle with that a little bit. The level 6 sister is struggling still a bit trying to coordinate all the cocks inside of her, but she bravely keeps fighting, which sister Mary approves with a smile.

After an hour, sister Ember is in the lead with a count of 20 men, followed by sister Mary with 18. The other girls don’t lack behind too much, but slowly start to show signs of exhaustion, whereas the level 10 sisters keep going without pause. While sister Ember is working on squeezing loads out of the men, sister Mary has started talking to the masters, as many of them have recognized her. She takes requests of which brother to make cum next by squeezing her holes and makes herself come, if she gets it wrong. It gradually turns into one of her streaming sessions, in which masters converse with her about sexual preferences and fantasies.

After two hours, sister Ember is still keeping pace and has finished 40 men, whereas sister Mary is at 34, though still enjoying herself a lot. The other girls fall back a bit more, but not as much as the level 6 sister, who is only at a count of 22. Her pussy hurts from the deep thrusts and she resorts to pleasing their cocks with her ass and sucking off with her mouth. Father John cautions her to not slack off too much, as she will be out of the race if she falls behind by more than half of the highest score. Hearing this, sister Ember picks up her pace and tries to reach number 50 faster in order to kick her out. With the audience on her side, sister Mary tries to encourage her, which turns into chanting of the masters, inspiring the little girl enough to quickly push past 25.

After three hours, sister Ember, sister Mary, and the level 8 sisters are sitting on their beds, having already reached their target, while the rest are slaving away, trying not to be last. It is becoming obvious that the level 6 girl will still lose. Sister Mary feels bad for her and gets scolded by sister Ember.

“If you had not cheered her on, I could have kicked her out right there. Now, she just sits there sobbing, getting dicked even though it makes no difference anymore. You are a naive suck-up, incompatible with this world, but this time someone else is paying the price for your delusion.”

Sister Mary ignores her, as there is no use in arguing, partly because she is not interested in a discussion and partly because sister Ember is right. She gave the level 6 girl a fleeting moment of purpose, just to be crushed by reality. Half an hour later, the ninth girl has reached her target and the level 6 girl is disqualified.

For the next stage, each girl needs to satisfy 10 wolves. Sister Ember and sister Mary go in the lead again, as they can effortlessly take three of the beasts at the same time, which allows them to reach their target after 20 minutes.

While the rest of the competition is still struggling, sister Mary walks over to the loser of the last stage and apologizes for getting her hopes up. The girl holds no grudge against sister Mary and expresses her own disappointment in herself for not getting up to 50.

“You are out of the tournament, but why don’t you continue and at least prove to yourself that you could have made it? It’s better than just sitting there, right? And with no time pressure, you can enjoy yourself a bit more.”

After an indifferent approval of father John, the girl is allowed to fuck more men with a smile on her face.

At the same time, the other contestants gradually finish their wolves. This time, it is a level 7 sister that makes the last place, whereupon she is out of the contest.

The third stage is a quick round, wherein the girls have to dash for the stands and suck off 10 masters. Since sister Mary had talked with them so much, she already knew where to find the ones that come quickly. Therefore, she finishes first in this round and even sucks off an eleventh master, who she knows is a huge fan of hers, much to the cheers of the audience. Soon after follow sister Ember, the three level 8 sister, and two level 7 sisters, eliminating another level 7 sister.

In the fourth round, the girls need to empty a liter jar of piss, which sister Mary and Ember down in a few seconds. Since they both lactate heavily, their bodies process the liquids in their stomachs very rapidly. However, the other girls don’t have the advantage and struggle to empty their jars, since they are still full with 60 loads that they swallowed earlier.

Suddenly a cheer goes through the audience, when the entire stands are applauding the level 6 girl that had just finished her 50th man. Sister Mary waves at the girl, exchanging smiles, while sister Ember silently disapproves of the celebration of mediocrity.

Some masters in the expensive front row beckon sister Mary, who quickly jumps down to them.

“Sister Mary, we are having a blast today.”

“So do I, master!”

“While this is a great show, we all know that tomorrow this will come down to you and sister Ember. And, I’ll be blunt, you are considered the underdog. But we would prefer it if you won. She is … no fun.”

“I would love to, but she has always been smarter and more capable, ahead of me from the start. I’ve begrudgingly come to terms that I don’t need to be the best and I am happy with that.”

“Look at all these people watching the tournament. They came here, to be entertained and you are going to disappoint them with such an anticlimactic finale? This is the last hurrah! You made that level 6 girl go down swinging and that is the least you can do tomorrow. Don’t do it for yourself, do it for the audience.”

Sister Mary looks around stunned, seeing the masters nodding at her in agreement and then glances at the level 6 girl who lies exhausted on her bed.

“You are right, it is the least I can do. I can promise that I’ll fight, but I can’t promise that I’ll win.”

“That will do, sister Mary.”

The round ends with another level 7 sister kicked out of the race.

For the final stage, each girl needs to satisfy five horses. In order to provide some kind of level playing field, sister Ember and Mary have to take the 55 cm (21.7 inches) cocks of their stallions, whereas the level 8 sisters only have to deal with horses sporting 45 cm (17.7 inches) penises. The lonely level 7 girl gets a horse only with a 35 cm (13.8 inches) member, but is faced with the problem that this is her very first encounter with a horse. Not knowing what to do, she inserts the horse cock in her pussy, which results in a powerful thrust right against her cervix. After lying on the floor in pain for a minute, she tries to get up, just to repeat the same mistake again.

Despite her handicap, sister Mar quickly realizes that she won’t lose this round and walks over to the girl that is about to get gut punched again by a horse dick.

“Don’t take him in your pussy, you have to insert him in your ass, where you can take it deeper.”

The crying girl seems completely lost. Sister Mary makes her stand further apart from the horse and puts the horse cock in the girl’s ass. Once the level 7 sister understands that it can control the depth by shuffling backward, she slowly adjusts her position. As soon as a smacking of the horse against the girl’s ass cheeks can be heard, cheering erupts from the stands.

Sister Mary now quickly runs back to her stallion and proceeds to make it come four more times.

Sister Ember finishes first, but the other girls can’t go on, standing with bulging bellies next to their horses unable to swallow more loads. Sister Mary easily passes by them, draining her stallions balls with no further problems.

One hour later, four girls have finished and the level 7 girl and a level 8 girl have a neck-and-neck race for the last spot. The level 7 sister eventually loses, but earns lots of applause for having performed so well on her first day with a horse.

Sister Ember is crowned the winner of the day and the audience is invited to witness tomorrow’s event, in which the two level 10 sisters and the three level 8 sisters will compete against each other.

In the night, sister Mary has trouble falling asleep, worrying about the next day and recalling the first day. As much as she thinks that she helped the other girls out of kindness, she can’t ignore the thought that she also wanted to avoid competing with sister Ember. Despite exceeding all expectations, her eternal nemesis makes her feel like a failure. Why couldn’t everyone be content with sister Mary quietly being number two? Why does she get dragged back into a competition she had abandoned and forgotten a long time ago? Ugh, stop crying, it’s just one more day. Get it over with and you will be finally free from sister Ember.

The next day, the five girls are standing in a row while father John explains the rules. Sister Mary is shaking and feels detached from herself while everything grows distant. She snaps back, when she is again asked to sit on a chair, onto which her legs are fastened with leather straps, but still confused about what to do, until suddenly a dildo drives 27 cm (10.6 inches) in her pussy and a flexible dildo drives 50 cm (19.7 inches) into her ass. However, when the dildo starts vibrating, her shock subsides and she can relax as she has entered well known territory. Only after she allowed herself to come does she realize that every girl is supposed to climax for a warm up in this first round. It seems she is not the only one who is nervous, as she is not the last one who reached her first climax of the day.

For the second round, the dildo in front goes deeper, reaching 30 cm (11.8 inches), but at her ass, she can feel a second dildo pushing in by 10 cm (4 inches), pushing the flexible dildo fully in her ass. The girls can deal with it, but worried about how far things will go need a bit longer to come again.

When the dildo in the pussy wanders to a depth of 33 cm (13 inches) and the dildo in their asses proceeds another 10 cm (4 inches), the girls start to understand that they are going through the requirements of each level, having now reached level 7. After each girl has come one more time, the front dildo goes to a depth of 36 cm (14.2 inches) and the back dildo is 30 cm (11.8 inches), pushing the flexible dildo deeper and deeper into their guts. The level 8 girls have a tough time trying to get themselves off, having been pushed to their limits.

The dildos for sister Mary and Ember proceed to 38 cm and 40 cm respectively, but the other girls know they can’t take anymore and are scared of getting impaled. However, father John stills their fears.

“Don’t worry, we know you can’t go further than that. But you can stay in the race, by compensating with a different task. Instead, you may insert 10 needles in each of your nipples. Who is going to continue and who is going to stay in the race?”

All three of them agree to continue and eventually pierce the nipples in order to complete the round. Afterwards, sister Mary and Ember can take one more insertion of dildos, reaching now their final depths of 40 cm (15.7 inches) in their pussy and 50 50 cm (39.3 inches) in their asses. The other three girls agree to compensate by hanging a kilo of weights onto each of their nipples.

At this point, the level 8 girls are in a race with sister Ember and Mary with having to complete more and more tasks. They have their breasts fully expanded while the level 10 girls only have to insert needles. Then, they each down a liter (0.26 gallon) of cum, while sister Ember and Mary attach weights.

After another round of nipple weights and another liter to swallow, the level 8 girls are slowly reaching their limits, where they are given a remote device with three buttons. A pink button will inflate the dildo in their pussy, a white button will pump cum into their ass through an outlet of the dildo in the rectum, and a red button allows them to give up. Lastly, a jar on a digital scale with 2 Liters (0.53 gallons) of cum. A display on the wall counts the total amount of volume that they have put into themselves.

This starts a war, trying to outdo each other. While the finale between the level 10 girls is put on hold, the level 8 sisters keep drinking and pushing buttons, trying to increase their number on the display, while the audience is cheering.

One of the girls is gradually falling behind, causing her to frantically keep drinking from the jar, until she bites off more than she can chew and her stomach hurls out all the liquid she had forced inside. While the mess is cleaned up with a mop by one of the managing sister, father John declares the first loser of today’s tournament.

“There goes the first one! Obviously, you are supposed to keep it all in. But let’s give a round of applause for fifth place!”

The girl is not allowed to leave and has to stay seated with her holes filled until the conclusion of the tournament.

The other two girls decide to leave the jar and keep pressing the other two buttons. They inflate the dildo in their pussy, until it is stretched to the max, whereupon they keep pumping cum into their asses. Their faces are contorting, while the insides are ballooning up, by their own will. Eventually, one of the girls can’t pump more into her ass. She looks at father John, confused about her remote not responding anymore.

“The pumps only go up to a certain pressure, so you can’t rupture your insides. It seems that your intestines can’t expand any further. The white button is not an option for you anymore.”

Reluctantly, she starts drinking from the jar, while the other girl still manages to pump more into her ass. However, eventually, her bowles reach their limit as well, and her white button stops working. While the crowd yells chucking chants, the two girls battle it out by emptying the jars. Eventually, one of them gives up and presses her red button.

With both their asses eventually leaking their contents past the dildo, they get up and half to waddle to a bucket with a scale to measure the end result, located on the other end of the stands. The audience observes them excitedly as they try to walk holding both dildos lightly inside, attempting to lose as little as possible of the contents in their bloated guts. With loud moans of relief, the girls squat over the scale and shoot the cum and the flexible dildo into the bucket. In the meantime, the volume of the inflated pussy dildos are measured by an assistant to be tallied on the display.

A cheer goes through the audience, when the sum of air and cum totals 3.6 L vs 3.8 L. What a close battle! After the third place winner gets celebrated for a short while, they get to finally rest and watch with the other masters the main event between the level 10 sisters starts. Only the disqualified girl has to stay strapped to her chair, enduring her filled holes until the conclusion of the event.

Without much hesitation, they down their second liter of cum and attach the extra weights to their nipples, starting the competition with the remotes.

Unlike their predecessors, sister Mary and sister Ember, manage to pump far more air into the pussy dildos. Once it gets uncomfortable, they switch to the additional 2 liter cum jars, which they both manage to empty completely much to the surprise of the audience.

Eventually, they pump cum into their asses. However, with having 20 more cm of dildo in their asses compared to the previous two girls, they soon run out of space as well. The masters on the stands gasp when they see that sister Mary starts to flinch first.

The increments in which both girls push the buttons get smaller and smaller, as their guts stretch out to their limits. Eventually, their buttons stop working as the pressure inside their ballooned intestines has reached the threshold of the pump. The display shows that sister Ember is ahead with a very small lead. Under groans, they try to inflate a bit more the dildos in their pussies, but after several minutes of no more progress, the competition is stopped. Sister Mary did not manage to overtake her on the leaderboard. Father John walks up to the panting girls.

“What an impressive display of tenaciousness we have just witnessed. A year ago, both girls were so innocent, weighting about 50kg (110 pounds) which corresponds to a volume of 50 liters. Now, they have 12 Liters of implants in their breasts, 4 liters of cum in their stomachs and probably 8 liters of cum and toys in their guts. That means that in a year, you managed to put half of your original volume in the form of implants, cum, and toys inside of you. How do you feel about that, sister Ember?”

“Hgn…I feel like I am about to burst…”

“Fantastic! And how do you feel, sister Mary?”

“… not … entirely like myself … I guess…”

After managing to chuckle out of the audience, the girls are allowed to get up and walk to the scales. They don’t even have to hold the dildo in their pussy, as they managed to inflate them above their pelvic bones, logging them firmly inside. Still, every step is agony, but so is any second they can’t empty their insides.

Once they are able to void their asses, there is enough space to pull out their inflates dildos to be measured. Everyone is staring at the display in anticipation as the numbers of the girls are tallying up. Eventually, the results show that sister Ember is ahead with 8.9 Liters before sister Ember with 8.8 Liters. The audience is applauding, but lots of murmuring also shows some disappointment from the audience.

“No, it is not over yet!”

Everyone looks at sister Mary, who has a stern look on her face, while she is squatting over the scale, trying to push more out of her ass, but without any success. Sister Ember starts laughing.

“Aww, you look so desperate. Be careful that you don’t start to shit in front of everyone. But that would make my victory even sweeter. I was always ahead of you.”

Sister Mary shakes her head and gets up. Still breathing heavily she looks around, seeing how everyone looks at her with pity. She sniffles a bit, but calms herself down and closes her eyes.

Then she sucks in her stomach and everyone gasps, seeing a small bulge on her belly. The entire room is completely silent, watching her pushing the bulge around many turns until it finally reaches her ass. Even father John has run up to her wondering what she is doing.

Suddenly, an apple pops out of her ass and falls onto the scale. The display slowly rises up to 9.0 Liters and the entire room explodes in cheers.

Father John looks at her completely perplexed.

“Where does the apple come from?”

“I put it inside in the morning, father John.”

“It was inside of you the entire time? With both dildos and all that cum? That was so dangerous, you could have hurt yourself! Why did you do that?”

“Because, I wanted to show that I was always ahead of sister Ember … by an apple.

“Why by an apple?”

Sister Ember suddenly remembers the apple that she told her about before the institute. She looks mortified at sister Mary, pleading with her eyes to keep it a secret. Sister Mary pauses for a second and shrugs.

“I am sorry, that was the only fruit from my fruit basket that fit in my ass. But was that not a good show? Are you not entertained?”

Father John looks at the cheering masters, shrugs back with a smile and declares sister Mary the winner.

The next day, eggs are harvested from the level 10 and 8 sisters, fertilized and implanted in all of the ten girls as well as other sisters of the institute.

9 months later, 60 girls and 16 boys are born and subsequently raised in boarding schools. Once they turn 18, they are ranked by beauty, health, physique, and fitness. Everyone with a score below the average is assigned working jobs at the institute that entail administration, cleaning, guarding, and maintenance. The better half is again split by the score into a high league and a low league. 20 Girls and 5 boys (2 of which transition to women) of the low league become cheap sex slaves for the common people and 10 girls 3 boys (1 of which transitions to a woman) of the high league become supreme sex slaves for the rich and powerful.