Story by Custos
(Original posting 24 April 2021 on https://inkbunny.net/Custos)

Please don’t repost this story, let it remain in my gallery on inkbunny!
This story contains material for adults only, do not read if you’re a minor.
The material presented is fictional and for adult fantasy only.
The author does not condone any of the depicted illegal activity in real life.

——

Rapage commission: Four for the team

As time went on and the turtle brothers firmly grasped each opportunity for some brotherly intimacy together, Raphael began to frequently feel ill in the mornings and vomit. On top of that he noticed that his stomach was starting to swell, despite his rigorous training exercises, and even master Splinter remarked that he had become chunky in his midsection. As nausea and fatigue plagued him, it came to a point where Raphael had no choice but to let Donatello examine him, the turtle with the purple bandana having had a mysterious smile on his lips the last month. And as Donny turned the monitor to Raphael and showing him the image feed of the live ultrasound he was performing on his brother’s stomach, showing four little lifeforms huddled tightly together and growing in his abdomen.

To say that Raphael was shocked would be an understatement, and when Donny came clear about having used an experimental blend of the mutagen from Dimension X during their tag team fuck in the gym, he nearly slammed his brother into a wall. Donny apologised and reasoned that there were no female turtles like them in existence to ensure their family’s survival, not that they would want to mate with females anyway, and that since Raph had the strongest constitution and build of them all he was perfect for undergoing the process. Still angered about not having been given a choice but slowly being talked and reasoned with, Raph had stormed out and trained in the gym for hours on end, alone. Eventually he came to terms with the fact he was going to give birth soon, who knows how, and he forgave Donny but made him promise never to circumvent the consent of any of their brothers again. Donatello agreed and apologised.

Mikey was ecstatic to learn the news and he clung even more to Raphael than usual, constantly stroking the stomach shell bulging out as he laid his ear to it to listen as well as kiss it. Leonardo was freaking out, demanding to know how they would explain several newborn turtle children to master Splinter when the time came. Donny sat everyone down and urged them that the time had come to confess to their father about their tight bond, or to take this chance and retire, to disappear. Have the life they could never have as vigilantes. Neither of those seemed like attractive options, and the group decided that they would inform master Splinter after the birth. He is their father and he would love them regardless, they reasoned.

So one late night as the rain came down hard above in the streets, flooding the pipes in the sewers and filling the cylindrical corridors with noisy water, Raphael is watching television in his bed as Mikey rests his head on his brother’s swollen stomach, the latter swiping away at his tablet. Leonardo is meditating in the corner and Donatello is reading a book, also in his bed in their communal bedroom. They could hear the thunder striking through the many layers of earth above their heads, the sounds of the city itself seemingly grinding to a halt.

Raphael’s eyes glaze over for a second, his hand reaching down to his stomach as he grunts. Donatello looks up from his book at the same time Mikey’s eyes curiously turn to his muscular brother’s face. Raph feels their eyes on him and tries to burp to circumvent the attention, but then immediately grunts again as another pinching becomes apparent deep within him:”Ugh…”
Mikey looks slightly concerned and places his hand on top of his brother’s swollen stomach:”What’s wrong, bro?”
Donny looks very interested when Raph tries to answer, but grunts again at the next contraction rippling through his body:”Raph? Is it time?”

Now Leonardo opens his eyes as well, still sitting in the lotus position with his index-fingers to his thumbs, looking over at the bed where Raphael pants at an increasing rate, “Ngh, some stomach gas, I think… Ngh!”
When Mikey then loudly and happily proclaims he can feel the babies moving within, all hands are on deck, despite Raphael’s objections. The large muscular turtle looks a bit pale, realising that the unavoidable is going to happen, frightened on how exactly it is going to happen! Donny rushes to get warm water and towels, a cliché but necessary, and Leonardo immediately rushes to ensure master Splinter was fast asleep in his bed a few hallways down. Mikey looks up at the huffing and panting Raphael with deep love and admiration in his eyes, never releasing his brother’s stomach as he whispers:”Cool, dude! You’re gonna be a mom!”
A sting of annoyance is visible in Raph’s expression and he pushes Michelangelo off his stomach, the smaller turtle playfully chuckling as his older brother dryly states:”Father! I’m going to be a father, just like the rest of you fucking lazy douchebags! After this is over I’m gonna kill Donny!”

Just at that moment, Donatello and Leonardo come back into the room, the latter carefully closing the door and freaking out about the noise Raphael is already making. Donny heard what Raph said and chuckles:”Fine by me, but let’s make sure you make it through first.”
As Donatello removes the bedsheets and Mikey eagerly pulls down his brother’s fundoshi to reveal his fat green dick laying over the equally large and heavy balls, Leo blurts out:”Raph. I know you don’t care in this moment, but pleeeaase try to be quiet! If master Splinter hears…”
Immediately the flash of a weapon being thrown startles everyone present, a lone sai trembling as it has pierced a pipe next to Leonardo and spreading a loud vibrating sound, Raphael grunt-screaming:“Get the fuck out if you’re going to be like that, Leo!”

Donatello and Michelangelo immediately try to calm down their brother who is obviously in increasing amounts of pain, the turtle sibling with the purple bandana removing any and all remaining weapons from Raphael’s reach. Mikey doesn’t really know how to handle the situation, much less diffuse it, and his mind panics as he just kneels between Raph’s legs and starts suckling on his fat cock head peeking out of the green foreskin. Raphael huffs and puffs, holding his stomach as Michelangelo reaches up and starts lovingly massaging the mound whilst orally pleasuring his labouring brother:”F-fuck. This can’t be happening! I’m gonna kill you, Donny! Imma…”
Donatello kneels at his brother’s side and embraces him tightly, placing a kiss on his now-sweating forehead:”There, there. I’m sorry, bro. Really, I am. Do you… want me to go get painkillers?”

The question surprises Raphael, his hands still on his stomach as he can feel the life within him churn and move around, eliciting another contractions as his anus is winking between his buttocks:”Erhm. Yes. No. Wait. No. Definitely not.”
Donny looks at Raphael as if ensuring he heard that correctly, Raphael grunting as he spreads his legs more and moans from Mikey’s blowjob:”I… I want to be right in my mind… when they come. I want to feel them. It’s gonna be worth it, right?”
Mikey grins around his brother’s rapidly swelling fat cock between his lips, seemingly proud as Donny smiles and nods to his labouring sibling:”Yes. Yes, it is gonna be more than worth it. Can we do anything to make your more comfortable?”

Leonardo has approached the bed and is looking down upon his labouring brother, keeping his mouth shut but blushing fiercely at seeing Raphael’s writhing sweaty body. His penis stirs underneath his fundoshi, a wet spot starting to form as he discovers something about himself that he never realised before. He steps up to the other side of Raphael’s bed and puts his hand onto his brother’s shoulder:”Sorry, dude. I didn’t mean to freak out. Maybe… I can help keep you quiet?”
He smiles down meekly at his throbbing erection covered by the thin white cloth, precum already pearling up from the wet spot and rolling down the folds hugging the turtle’s shaft snugly. Raphael looks up at Leo and laughs, his face immediately contorting as laughing hurts his stomach:”Hah, ngh. Oh, wow. You sure, bro? I might bite your dick off doing this.”
Leonardo nods, releasing his fundoshi and offering his leaking cock head peeking from his foreskin to the strongest brother:”Yeah, it’s alright. I trust you, Raph. I don’t say this often enough, but you’re a great brother. I trust you not to hurt me. I need you, bro.”

Especially that last sentence seems to convince Raphael, Leonardo admitting to need him being one of the rarest phrases uttered. It may be because Raph is under stress and Leo wants to be a good sibling for his brother in need. The muscular turtle grunts and nods, first turning back to Donny and Mikey:”You two, get naked too. I don’t want painkillers, I have something better.”
Mikey, still with Raphael’s large cock wedged in his mouth, and Donny look at each other, both grinning and immediately starting to undress, realising that this stressful situation may become more pleasant after all. Then Raphael turns his head back to Leonardo and without another word swallows his cock deeply within his throat, Leo moaning as his knees buckle briefly and he steadies himself by grabbing his brother’s head:”Oh, Raph. You always suck my dick so good.”
A deep hum is audible from Raphael as he blows his brother, in the vein of ‘I know’, and Donatello and Michelangelo have finished unwrapping their fundoshi cloths as well. Raphael can vaguely see Mikey whisper something to Donny, to which the latter whispers something back. The muscular labouring turtle isn’t given much time to ponder this, as Leo’s hands gently take hold of his brother’s head and starts thrusting his member down Raph’s throat:”Ngh, Raph. Your tongue is so soft.”

Then, almost without noticing, Michelangelo has crawled up between Raphael’s spread-open legs and is teasing his cock head at the latter’s winking anus, the muscular brother grunting in questioning tones as he tries to look at his other siblings. As Mikey sighs in bliss, feeling the exceptionally hot contracting tunnel spread to admit his penis nice and smoothly, Donny leans in and hushes Raphael:”Hush, Raph. He’s just stretching you a bit. It’ll help with the birthing process. As will this…”
And the grinning turtle with the purple bandana leans down to take Raphael’s throbbing meaty cock between his lips, sucking the swollen juicy plum that is his brother’s tip hard as his tongue swirls in between the spongy helmet and the foreskin. Raphael moans out, his sphincter relaxing in response to the pleasure as Michelangelo slides the entire length of his throbbing penis inside, “Oh, fuck. Raphy, you feel so good. Balls-deep, man!”

A few minutes pass in silent moaning, grunting, and slurping, as the four turtle brothers enjoy themselves. The storm above ground continues to rage on as the dripping water echoes through the hallways along with their combined sex noises, Raphael groaning around Leo’s cock as he holds his swollen stomach. All three of his brothers now reach out and massage the pregnant mound to help alleviate Raph’s pain, the turtle with the red bandana moaning as his cock starts to leak copious amounts of precum down Donny’s throat. Mikey on the other hand has the best grip on Raphael’s round stomach, leaning forward with his cheek and ear to the bump as he listens whilst gently thrusting his hips back and forth, pressing a kiss to the surface every now and then. Then suddenly, Michelangelo’s eyes grow big as he holds his loins still, buried balls-deep inside his brother’s contracting hole:”Wh-wha?! Raph, Donny, Leo! I think… I think I can feel something coming down!”

Donatello, Leonardo, and Raphael seem dazed and lost for words for a fraction of a second, just all looking at Michelangelo with wide eyes, two of them still with a dick in their mouths. Mikey grinds his hips forwards into his brother’s and grunts in pleasure, his eyes closed as he feels his spongey cock head gently stroke the fragile form within, his balls drawing up in excitement. Precum drools from the slit in the swollen plum that is his tip, the slippery lubricant gently massages into the body of the unborn life, “I-it’s soft. So small. And… I think I can feel a shell!”
Immediately upon uttering these words, Michelangelo grunts and breathes a long drawn-out moan, his perineum flexing as jet after jet of hot turtle semen erupts over the small unborn turtle within Raphael’s colon. Donatello stops sucking his muscular brother’s fat cock and Raph lets Leo’s dick escape from his lips as he grits his teeth, his body squeezing tight in a contraction to attempt and evict the life within as well as the intruder attached to his youngest brother’s body, ”Nggh! Aah! Fuuck!”

To Raphael’s relief, the administering of Mikey’s hot seed on the spot of friction mildly soothes the birthing pains, the turtle with the red bandana gripping his stomach as he tries to squeeze his rectal muscles as he’d never done before. Michelangelo sighs and withdraws his cock from his brother’s anus, Donny at the ready as immediately after a wonderfully small form squeezes from Raph’s entrance, caught by tall turtle brother’s expecting hands. A cry erupts and echoes mildly in the room, somewhat drowned out by the noise of the storm outside above street level, as Donatello’s slightly shaking hands wipe down the crying baby’s body from the birthing fluids and Mikey’s semen. All brothers’ eyes are on the miracle of life, their minds still not fully comprehending the situation even when the evidence is right in front of their noses, Donny smiling widely as he lays the firstborn baby on Raphael’s chest:”It’s a boy, bro. And he has Leo’s ugly mug!”

Another shock runs through the brothers as they look down upon the baby turtle’s crying face, his expression contorted and the colour of his green cheeks a dark green in the effort of wailing his birthing cries. The semblance with Leonardo is certainly present, something that makes tears well up in the oldest brother’s eyes:”H-he looks like me! We’ve had a baby together, Raph!”
Raphael’s expression seems to soften a little, his usually arrogant demeanour melting away as only a deeply loving father remains, his heart lost at first glance with his firstborn child:”Y-yeah. He’s beautiful. My little boy.”
Donatello and Michelangelo now kneel next to the bed, the latter spent as his penis has grown softer, the former grinning as he strokes the baby’s naked back:”You know, we don’t have nipples to feed them. But there is still a way to feed him the natural way…”

Raphael looks at Donny with incredulous eyes, the turtle with the purple bandana reaching out to gently take hold of Leonardo’s now-semi-erect penis and giving it a stroke:”I’ve studied our anatomy and adjusted the formula accordingly. The babies will get all the nutrition they need!”
And with that, Donatello peels back Leonardo’s foreskin and exposes the precum-oozing slit, gently guiding the fat juicy helmet to the baby’s lips as he immediately latches on and starts to nurse, causing Leo’s body to stiffen in both arousal and shock, “Oh, what the- FUCK!”

Whereas the brothers’ cocks had grown a bit softer before, all of them grew back into raging hardons, even Mikey’s as his big dumb eyes were filled with wonder and excitement, his face leaning in so close to the nursing scene that Leo could feel his brother’s breath on his shaft, “Cool! Between the four of us, he’ll never go hungry!”
Right then, Raphael grunts out once more, Donatello helping lift the naked newborn turtle baby boy out of his labouring brother’s arms and into Leonardo’s, ushering the latter down onto a bed and showing him the correct position to lay the baby at his penis once more, “Just make sure you keep a steady flow of precum, bro. If you feel you’re gonna ejaculate, just make sure to release gently and gradually!”

Over the course of the next hour, three more babies are born. Each of the brothers took a turn to penetrate Raphael during his birthing pains, soothing the ache within as they unloaded their jets of hot turtle semen onto the unborn forms of the babies each in turn. The second newborn infant resembled Donatello, the third Raphael, and the last one Michelangelo. As finally the last child was born, Donatello administered aftercare to Raphael’s well-stretched anus, the brother bathing in sweat and after bliss as he gazed down at the baby nursing between his legs with deep love. The brothers had pushed the beds together and were now all sitting next to Raphael, moving the newborn babies around so that each of them could get used to the taste of all four of their daddies. One by one, the turtle brothers grunted in ecstasy as they eventually unloaded into their sons’ mouths, the newborn turtle boys eagerly gulping and slurping down their thick nutritious meals.

Michelangelo, usually not one for seriousness, leans into Raph as he sits next to him, grabbing his exhausted brother’s face and pressing his tongue deep down his throat in a passionate kiss whilst unloading his second orgasm of the night into the mouth of the baby between his legs:”Mmmnh. Love you, bro. Thank you for enduring for us!”
Raphael is sweaty and slightly pale, surprised not by Mikey’s token of lustful love, but the words after, briefly stumped for words:”Well, it better not happen again. Without my consent.”
The turtle brother with the orange bandana grins and nuzzles into Raph’s muscular form and neck:”Does that mean you’d be willing to do this again? To be honest, it was hot seeing you birth our children!”
Raphael’s body stiffens as he hears the question, blushing somewhat as he turns away:”We’ll see. Let’s take care of our firstborns first.”

Donatello nods and suddenly procures a compact machine with a tube from underneath his bed that looks suspiciously like a breast pump:”So bros, from now on there will be no more jacking off and wasting your semen. Use this and collect the ‘milk’ for the little ones to be fed later by bottle, alright?”
As the turtle with the purple bandana slides the tube over his swollen cock, turning on the pump, he only has to grunt for a few seconds before unloading into the receptacle, a baby bottle filling up underneath for about a quarter of its volume. Moaning, Donny slips the bottle off the pump and puts on a rubber teat, holding the baby in his care up to his chest and pushing the fake nipple into the little one’s mouth, whom immediately and hungrily starts nursing from it.

Just then, as Leonardo is nursing the newborn baby boy between his legs and finishing filling his tiny tummy with a lustful moan, the oldest of the brothers notices the door is ajar and the silhouette of someone looking in. He easily recognises the person to be their father and sensei, master Splinter. He chokes up in the moment, not sure what to say, but then sees the rat man shake his head lightly and smile before walking away. He suspects they will all have an awkward conversation in the morning.