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Hitoshi couldn’t believe his luck, his fucktoy had permanently de-aged itself to a fourteen year old four months ago. It was fantastic and he loved every minute of fucking the slut in that body, but this was the most amazing accident that ever could have happened. They’d been out shopping at the mall when a child had bumped into Izuku and suddenly his husband was a three year old. The kid’s mom explained it would last for three days, Izuku would have no memory of being an adult, and once it turned back it wouldn’t remember anything that happened over those three days.
They had always been careful to never push the toy too far past its limit. If they pushed too hard it wouldn’t trust them, if they hurt it too much it wouldn’t want to get fucked anymore. They’d spent so much time teaching it that its only purpose in life was to get fucked and earning its trust, they couldn’t do anything that would damage its belief in what they’d taught it or they woul lose their fucktoy. But now Izuku was a toddler and it wouldn’t remember anything they did to it later…
Daddy and Master had taught him the fine line between training a kid to be a good slut and damaging them beyond repair. There were things you couldn’t indulge in no matter how much you wanted until they’d been trained to take it. The problem was, most of the fun things Hitoshi liked to indulge in were so much more delicious when the person was younger. And maybe he could take Izuku to the club and have it de-aged for a night and maybe it would be able to handle the things he wanted. But it would be so much more fun if it couldn’t. Sure he could ask the toy to pretend he didn’t like it, but he would know it was an act and he didn’t want it to be an act. He wasn’t a bad person, he would never do the things he wanted with an actual toddler who would grow up remembering them. So this was his chance to finally indulge in his darkest fantasies with no consequences.
A text to his parents and he had their house for the next several days as long as he promised to share. He needed the sound proof walls, the last thing he needed was some nosy neighbor calling the cops. He stopped by the house of a sidekick he’d worked with so he could take advantage of his quirk, then carried the passed out child to his parents house and stripped them both naked. He spent little of his precious time stretching the impossibly tiny hole, just enough to slide in comfortably without tearing but not enough to keep it from hurting.
Izuku woke up feeling weird, something was hurting his butt and he was moving around. He opened his eyes to find a man he’d never seen before above him, moving back and forth. He blinked a few times trying to figure out what the man was doing and then he looked down and saw that the man’s thing was inside his butt. Why would the man be doing that? It hurt.
His eyes teared up and he looked up at the man who was watching him with a mean look on his face, “What are you doing? Where’s mommy? I want my mommy.”
A large hand wrapped around his throat and Izuku couldn’t breathe, “Your mommy didn’t want you anymore so she gave you to me. Because she knew you weren’t good for anything but taking a cock in your pussy.”
The man let go of Izuku’s throat and he was sobbing while trying to suck in air. “No mommy wouldn’t give me away. Mommy wouldn’t let you hurt me. Why are you hurting me? Stop it!”
Hitoshi looked down at the little boy, red in the face and crying uncontrollably and it was so fucking hot . “I’m not going to stop, whore. You belong to me now and I’m going to do whatever I want with your disgusting little body.”
He slapped it across the face just to make it cry harder and groaned when he got what he wanted. He shoved its legs up next to its head so he could get the best angle to go as deep as possible and he fucked it hard . Its little body was shaking and it was shrieking and every noise and tear made Hitoshi fuck him harder and faster, desperate to fill the panicking child with his come.
He started choking it hard enough to bruise and its walls were clamping down so hard with every struggled breath in. He filled it up, the tight heat was too much for him to not come, but he kept fucking. His friend’s quirk would keep him hard for the next several hours and he was going to use that time wisely.
Hitoshi stopped choking it, he wanted the slut awake for as long as possible. He started playing with its little baby cock earning more sobs from the boy. “Please stop mister. It hurts, I don’t like it!”
“I don’t care if you like it, you’re my slut now so all that matters is that I like it. And you’ll call me Sir or I’ll make it worse for you. Do you understand?”
Izuku shook its head no, not wanting to accept its fate. Hitoshi slapped it again, “I said do you understand!"
“Yes Sir!”
“Good slut. You’re going to let me fuck this pussy with my cock any time I want aren’t you?”
“Yes Sir.” Its body was wracked with sobs now. Hitoshi smiled, Izuku was so beautiful crying on his dick. He leaned over to suck at its neck before biting hard enough to leave a mark. He covered its neck and chest in bites, loving the already bruising teeth marks marring the child’s previously unmarked flesh. He hammered away at the tight hole soaking in the kid’s sobs and pleas for him to stop or at least slow down.
Eventually Izuku’s little body betrayed it, its cock getting hard at the abuse against its prostate. The little boy cried harder when it started feeling good, so confused about what was happening to its body. By then, Hitoshi had come three times and the swell of its stomach was insane. Usually it took at least five loads to make any difference in his fucktoy, but in such a small body three was enough for it to start looking pregnant.
Deciding a change of scenery was needed, Hitoshi stood and turned the boy around so it was facing away from him without removing his cock. The feeling of its walls twisting around his dick almost had him climaxing again. He moved the boy up and down his length like a fleshlight while he walked them to the front of the house. He ripped the blinds on the window in the living room aside and pressed the toy against the glass.
“Look out there little slut. Anyone could see you getting fucked like a whore but no one will care. Hell, maybe they’ll come in and join us. Would you like that? You want everyone to come in and fuck your little boypussy?” Izuku sobbed and shook its head, it didn’t know Daddy and Master had special windows made so no one could see in, the blinds were simply to keep the sun out. “I think you would, you’re little cock is so hard. You’re enjoying being raped aren’t you?”
Izuku was kicking its little legs and beating its fists on the window. “No! Don’t like it! No.”
“Oh but you do you little cockslut. You fucking love it, stop lying.” He bit into one of the marks on its neck and the little whore came. Its body was too young to produce any fluids but the shriek and the way its body spasmed around him gave it away. “That feeling? That’s an orgasm, Izuku. That means you came while I was raping you. Only true sluts come from getting raped.”
The sobbing had stopped now and Hitoshi could see the broken look on Izuku’s face in the reflection on the window. “I don’t want to be a slut.”
Hitoshi chuckled, “It doesn’t matter what you want. You were born to be a slut. That’s all you’ll ever be.” With that he started hammering into its ass as hard as possible, chasing his own release. In no time at all he was flooding its insides with spunk again, except its little body had run out of room. His tiny little fucktoy opened its mouth and come came pouring out.
The sight of a toddler vomiting his come was so hot he kept coming and the more he came, the more jizz came out of its mouth. He carried it over to the couch to bounce it on his cock until he came again. He spent the night with the kid on his cock, not removing it to eat or shower. By the time his parents got home from their night out, Izuku had been so full he’d vomited come three more times. Hitoshi’s cock was finally soft so he’d plugged the boy and left it on the living room floor while he worked on some paperwork.
Master was the first one it noticed, Izuku lifted a hand toward the hero he recognized, “Present Mic are you here to save me?”
Master scooped the boy up, running a hand over its bloated tummy. “Oh poor baby, did that mean man fill you up too much?”
Izuku nodded and Daddy stepped forward, “You brought Eraserhead? Two heroes came to save me?”
Daddy asked, “You know me kid?”
A weak smile, “Yeah you stopped a villain by my mommy’s house. That man said mommy didn’t want me no more, but you’re here to take me back to her right?”
Daddy ran a hand up its chubby leg, “You poor stupid slut, we aren’t here to save you. We’re here to use you.” Izuku sobbed loudly as they carried it to their bedroom to spend the night stuffing both their cocks in its ass, at the same time.
It was so fucked out and broken that it didn’t protest the next day when Daddy plugged up all the come that hadn’t forced its way out of Izuku’s mouth and carried it to the office. He spent the day with it warming his cock, fucking the crying whore whenever he got too turned on to focus on work.
Every time a sidekick came into the room to jerk off and dump their load all over the boy in Eraserhead’s lap Izuku’s eyes looked so betrayed he had to fuck it again. When he had to leave for patrol he handed it over to Hitoshi so it could warm his cock instead.
They took it home that night and forced two more orgasms out of its baby dick while they passed it around between the three of them until they went to bed. It woke up still stuffed with Master’s cock and had become so used to constant fucking that it started rocking its tiny, bloated body back onto his dick.
That resulted in Master pushing its face into the pillow and fucking it roughly until Daddy woke up for his turn. They all had the day off so they spent it filling their baby whore until it was coughing up come constantly.
By the third day Izuku was so out of its mind it was begging them to fuck it. They invited all the staff from UA over and passed the cock drunk slut around until it passed out. Then they took turns fucking its limp body. By the time everyone was done, Izuku was wrecked. Coated in come, so full its stomach looked about to burst, and covered in bites and hickeys.
Hitoshi stood over his sleeping husband watching it rest after he’d cleaned it up. He was there waiting when Izuku went back to its fourteen year old body and all the marks from the past three days disappeared. Izuku blinked up at him, “What’s going on Sir? We were at the mall and then I think I passed out?”
He brushed its hair away from its face, “You were hit with a kid's quirk by accident. You’ve been passed out for three days now.”
Izuku smiled at him, “Oh, well at least I had Sir taking care of me.”
Hitoshi kissed its forehead, “That’s right baby. I took real good care of you.”