Izuku bit his lip as he leaned forward, digging deep to stretch. He almost let out a small gasp as he wrapped his fingers around his toes, pushing his body further and further.
"Thatta boy Midori, really lean into it!" Mina Ashido cheered him as she assisted their mutual classmate, Momo Yaoyoruzu, in her own stretching. Izuku blushed, both from the praise and from the girls in their respective outfits. Mina was wearing tights of the same design as her hero costume, along with a tight sports bra. Momo was wearing bright red sweatpants that did nothing to hide her bubble butt, as well as her own sports bra that struggled to hold onto her massive mammaries.
Izuku shuddered as he reached an arm back to adjust his shorts and underwear. He had a minor panic earlier - somehow, he had misplaced all of his new 'special' underwear, forcing him to wear an old pair that were worn out. He could feel them stretch to fit him, and the way they seemed to groan as he moved. He prayed that they held, and that he wouldn't be embarrassed in front of his two pretty classmates.
The three were set up in Momo's room, where enough space had been cleared for their stretching exercises. It had been going well so far, and Izuku was certainly feeling more loose, which was a benefit to his new Shoot Style.
Turning, Izuku faced both girls as he resumed his stretch, pushing himself further.
"Very nice!" Mina cheered him on as Momo nodded, her own little smile on her face. Izuku blushed, too wrapped up in the praise to notice a new problem. His 'special' underwear, worn down from years of wearing them, torn. And one tear was all that was needed.
Mina and Momo watched in shock and arousement as, in the span of a few seconds, Midoriay's shorts exploded off his lower body, literally tearing in half. The culprit to this was soon revealed - Midoriya's massive, beautiful femboi booty, one that put even Uraraka's and Tsuyu's to shame.
As silence hung in the air, Mina and Momo felt their bodies heat up while certain parts reacted very positively to the reveal. Midoriya meanwhile, whimpered in embarrassment, his Quirk activating as he blurred and reappeared under Momo's sheets, a small, shivering ball the only sign that he was there.
The girls were shaken from their lust driven mindsets when they heard their friends' cries. Both girls cringed as they thought about how embarrassing it was for that to happen, before carefully approaching the bed.
"Midori," Mina began, keeping her voice soft and measured "are you ok? Wanna talk about that."
"N-no." Izuku whimpered out, his head peeking out of the sheets, the girls' hearts breaking upon seeing the tears in his eyes. "I-If Yaoyoruzu could just make me some sweatpants, I-I can head back to my room. I'm sorry about all this, imnotapervertpleasedonttellanyoneimsosorry-"
"Easy Midoriya," Momo spoke up, slowly placing a comforting hand on the boy's illegally fluffy head "we aren't made and we aren't going to tell anyone. I think we just…have some questions."
Izuku hiccuped and nodded, sitting up, but keeping his body beneath the sheets. "O-Ok."
Mina and Momo looked at eachother, before turning back to look at him. "First, I guess…what just happened?" Momo asked, though she felt like she had an idea.
"I-I was born with a…really big butt." Izuku blushed as he spoke. "I've had to get special compression underwear since I was a child."
Both girls nodded. They didn't speak up, but both wore special compression undergarments for…various large body parts. They also knew the stigma for those who didn't have traditionally acceptably large body parts.
"Were you bullied because of it?" Mina asked, her eyes narrowing. She hated bullies with a passion.
"A-A little." Izuku admitted. "But I've gotten better at hiding it here, and the other few who know aren't gonna make fun of it."
Mina and Momo relaxed. If someone in their class was going to attack Midoriya for this…well, they'd rain hell on them.
Mina bit her lip as she looked on at Momo comforting the green haired femboi shortstack. All the girls agreed that, in terms of looks, Midoirya was the most feminine like. This wasn't a diss - rather, due to their conditions, this was a huge compliment. His massive, phat ass (and not too shabby cock she saw swinging between his legs) only helped this status.
'Oh fuck.' Mina mentally groaned, feeling her tights get tighter. 'That little shortstack bitch is just asking for it.' Izuku had moved fully out of the sheets and was cuddled into Momo's side, his face red, but not shying away. Mina's eyes roamed the massive ass that was jiggling right in her face. Her eyes widened as she saw something poking out of Izuku's back door.
Izuku had to fight to keep the lustful grin off his face. While everything he had said had been true, he was also a 19 year old University student with a size kink - and the boys around him just weren't doing it. When he found out the girl's secret, he had been beside himself with lust and joy, having furiously bounced on his bitchbreaker dildo during the time.
He had no idea who had taken his more recent compression underwear, but he thanked them for it. Because now, he didn't have to do much work - just rely on Mina's overwhelming thirst to take over.
He didn't have to wait long. Mina carefully spread his cheeks, her eyes twitching at the feel of his doughy flesh and the firm muscle packed beneath it. Her eyes locked onto her prize - a butt-plug, the ring of which was hanging out of Izuku's asshole.
Gripping his asscheeks, Mina hooked a finger into the plug. "Midori~" Her voice, seemingly normal, carried an undertone of lust that made Izuku shiver. "You naughty little butt-slut~"
"Mina!" Momo yelped, scandalized at her friend's words to their classmate. "Please, cease using such language towards Mi…doriya." Momo's voice trailed off as Mina slowly pulled the plug out and Midoriya's face adopted the lewdest of images.
"Ahhhh, Mina~" Izuku moaned out, unintentionally burying himself further into Momo's cleavage, as the brunette watched, captivated by the lewd scene. Reaching a hand down, Momo gripped Izuku's chin and pulled his head up, forcing him to look at her.
"Izuku," she began, her voice of the warm, motherly variety "is what Mina said true? Are you just a deprived little butt-slut? Do you love big, fat appendages and toys in this glorious rump?" Momo swatted his ass, watching the flesh bounce and jiggle, causing her own loins to stir.
"Yes!" Izuku whimpered out as Mina finally pulled the full plug out. "I fucking love big, fat things in my butt! I love sucking and choking on BitchBreaker Dildos before sitting on them! I wanna take a big, fat cock right up my tight little boi pussy~"
TWAP!
Due to his position, Izuku was on his knees, his face in Momo's chest and, as such, he felt a long, thick fleshy object slap across his back. Turning, Izuku's eyes widened and shined as he took in the sight of Mina's massive, pink cock. It was long - probably around 14 inches long - and as thick as his forearm.
Smirking up at her, Izuku began to slowly gyrate his hips, bouncing his ass too and fro on Mina's shaft. Mina groaned as the silky smooth bottom rubbed against her cock. "Fuck, such a nice phat ass you have here Izuku~" She hissed out, her hands lightly caressing his rump and thighs. "Mhmm, I bet it's all nice and loose from those dildos and all the cock you take up there."
Izuku giggled as he sped up. "From the dildos, yes, but not from any cocks. All the boys are too damn small. I need someone with a real cock to fuck me."
"Guess you should have come to me first, huh." Mina teased as she spanked him, Izuku's cut yelp cutting across the room. "I bet dealing with all those limpdick boys has you really wound up?"
Izuku panted and nodded as he rubbed against Mina even faster. Biting his lip, Izuku sat up and tore his shirt straight off, showing his upper body to both girls. Mina hissed in as she enjoyed the view while Momo bit her lip, having removed her sports bra, and was unconsciously playing with her tits. Izuku's upper body was, somehow, slim and feminine with child-bearing hips, while also having enough musculature to work with his quirk. His pectorals were bigger than most guys, and he was hairless. Even the scars only enhanced his form, instead of detracting from it.
Getting back on his knees, his bum now on Momo's lap, Izuku placed a hand on Mina's shiny cock - wait what?
"Mina…" Izuku breathed out, his mind racing as his cock ached. "Can you…use your Quirk as lube?"
"Yep." Mina's simple answer overpowered the miniscule reservations that Izuku had, as he stretched his mouth open as far as he could. Nearly throwing himself forward, Izuku jammed half of Mina's mighty meat into his mouth. A wet gagging noise filled the air as Izuku choked down Mina's cock.
The pink-skinned futa moaned in pleasure as she gripped Izuku's hair, reaching back and spanking the boi's ass. "Fuck!" Mina growled, beginning to thrust her hips, forcing more and more of her cock down Izuku's throat. "You nasty fucking slut! Who the fuck do you think you are, gobbling down my cock like a fucking whore?"
Finally reaching the base of her cock, Midoriya sucked hard, causing Mina to scream as a single shot of cum erupted from her throat, flooding Izuku's stomach. Grasping the bed to steady herself, Mina's hands bunched the bed sheets up as she focused, stopping the imminent flood of semen as Izuku pulled back.
"Mwa!" Izuku's overexaggerated release of Mina's cock drew her attention. "You're right Mina~ I'm a nasty fucking slut who just wants to be a good boi for his Queen." Sitting up, Izuku began to nibble on Mina's breasts, the pink-skinned woman pulling him closer and growling into his ear. "My beautiful Alien Queen~"
Mina snapped. Pushing Izuku down on his back - his head landing in the now naked Momo's lap - Mina lifted his legs up so they rested on her shoulders, her shiny, lubed up cock pressing against his backdoor.
Izuku shivered and breathed in deep, accidentally whiffing in another musky scent near his head. Craning his neck, Izuku's eyes widened as Momo hovered over him, her massive tits bouncing over him - along with her foot and a half long monster cock!
"Don't worry Zuzu~" Momo cooed, her voice warm and loving as she reached down, adjusting her seating position and bringing Izuku to her breasts. "Mommy's gonna take good care of you while Mina fucks that big fat ass of yours. Just suck on Mommy's big tits and cock baby boy~"
Izuku shivered. He didn't have a mommy fetish (that he knew off) but this was…really really hot. "Yes Mommy." Izuku whimpered as he began to suck and nibble on Momo's tits, his hand closing around Momo's shaft and beginning to stroke it.
Momo hissed at the contact, before her arm glowed. In a flash, a bottle of edible lube was present. Momo poured the contents over her cock, and Izuku got to work spreading it about her monstrous shaft.
"Good boy, such a good boy~" Momo purred before wincing as Izuku's hand gripped a bit too hard and he released her tit with a cry of pain and pleasure. Mina had forced the head of her cock inside his ass, hissing as she pushed her shiny shaft forward.
"Fuck!" Mina cried as a bit of cum spurted from her tip, lubing up Izuku's ass more and making the boy shudder in joy. "How the fuck is this still so tight?"
Momo giggled as she stroked Izuku's hair. "Oh, our little boi has never had someone as big as you stretch him out~ I can tell. I bet he's just used dildos."
Izuku hollered as he came, his bucking cock showering the bed and Momo with his seed. "Yes!!! I've had to fuck myself senseless with dildos and plugs! You should see the shrimp dicks we have in our class! More MINA MORE!!" Izuku cried as his ass convulsed around Mina's cock.
Hearts in his eyes, Izuku activated Full Cowling, using 5% to push back against Mina, fucking himself on her faster. Momo cooed as Mina yelped and gripped the sheets harder, her nails leaving holes. "Fuck, you cheating little bitch boi! I'm fucking cumming!"
With a cry of pleasure, Mina erupted inside him, filling his ass and making his stomach bloat. Izuku shuddered as the warm liquid flooded his system. Breathing deeply, Izuku looked back at the panting pink pounder. Feeling her go soft - and frowning at the lack of stamina - Izuku began to twerk on her cock, clapping his asscheeks on her alien schlong.
Mina gasped and groaned in pleasure. "Izuku~ How the hell can you take getting fucked like this? Most boys would be unconscious!"
Momo smiled as she patted Izuku's head, opening his mouth and forcing her cock inside. "Izuku isn't like other boys Mina. He's perfect~ The perfect Hero to be, the perfect cock sleeve. Even his cock is perfect for a boy!" Momo couldn't hold back her adoration for Izuku's 8 incher. Sure, futa's were bigger, but this was the biggest boy cock Momo had ever seen.
"Please Mina~" Izuku begged as he released Momo's cock, gasping for air. He was really putting in the effort into shaking his hips. "I need that big pink cock to gap my asshole wide open. I need you to shoot another fat load inside my big, phat femboi booty~ Please…my Alien Queen."
Mina growled as Izuku's shit eating grin told her he knew just how he was teasing her. Smirking, Mina slapped Izuku's ass and concentrated. "Get ready Midori, I'm sure you'll love this~"
To Izuku's amazement, he could feel Mina's balls grow bigger. His eyes grew wide as he watched her sack inflate with semen and her cock harden again. "Wh-what?"
Mina's grin was evil as she slowly started thrusting again. "I can use my Quirk - fuck, why are you still so tight - to speed up the production of semen and even create artificial semen! Hope you're ready to spew like a geyser Midori!" She cackled as she let loose a massive constant stream of semen, her already sensitive cock unloading inside her.
Izuku's eyes rolled into the back of his head as he felt wave after wave of semen wash into his stomach. Panting and moaning, Izuku's breath hitched as he felt a rush of semen flood his throat. He could do nothing as shot after shot of Mina's cum blasted out of his mouth, splattering over a moaning Yaoyoruzu, who had created some more lube, and was jerking herself off.
"Oh my, I had no idea you could use your Quirk like that Mina!" Momo cried out as she added to the cum shower, her own massive load erupting and spraying Izuku and Mina. Mina faltered slightly as she noticed that just one of Momo's loads was equal to the one she just did - and that was without any sort of Quirk help!
"Oh fuck, you cum buckets naturally don't you Yaomomo!" Mina yelped as she felt herself petter off, pulling out and spraying the last large amount onto Izuku's back, covering him in a layer of sticky jizz. "Jesus, I think we buried him in cum!"
There was little exaggeration in that statement. Izuku's torso and face were almost unseeable thanks to the massive loads both futas showered him with. His legs were twitching as he burped and hiccupped more of Mina's cum out, the loads becoming smaller and smaller as he did so. Meanwhile, cum gushed out of his now gaping asshole, onto Momo's definitely ruined bed.
"I'm surprised the little guy is still awake." Mina remarked, laying back down and dropping Izuku onto a small pile of cum. She herself was covered in the shots from Izuku's ass, as well as Momo's own semen. Gathering a small amount, Mina gave it an experimental lick, moaning. "Shit, you've got some tasty cum Momo."
"Why thank you~" Mina started as Momo's voice was heard from right beside her. Then her world flipped upside down as Momo grabbed her shoulders and pulled her back, forcing Mina's head to hang off the side of the bed.
Looking up at Momo's intimidating form - massive, cum covered titties that were almost unseeable thanks to her massive nuts in Mina's eyeline, a lust-filled smirk on her face - Mina whimpered.
Keeping Mina down with a hand on her head, Momo reached over and slapped Izuku's ass. "Stay focused Izu~" She cooed as he slowly turned around, the hearts having never left his eyes. Momo noticed that, among other things, Izuku's cock was still rock hard and his balls still looked full. "I'm gonna give my baby boy some time to rest~ In the meantime, I'm going to use Mina's tight little throat to get off another load."
"Please…" Izuku mumbled out through the torrent of cum. Lifting his head up, Izuku wiped some cum away from his eyes, swallowing another small amount. Mina's cum was so thick and tasty, Izuku wanted to eat it every day.
And yet, he still wanted more.
"Please Mommy, please don't tire yourself out." Izuku crawled over to Mina's torso, throwing his leg over her, straddling the pink-skinned girl's stomach. Excess semen was still falling out of his gapped bumhole, spilling onto Mina's stomach. Izuku began to slowly shake his ass, biting his lip as he looked over his shoulder at Momo. "I wanna have that thick futa-cock shoved up my ass! I want you to gape me even more than Mina did~ I wanna be addicted to taking both your cocks and eating your cum until the day I die! Please Mommy, don't forget about your baby boy~"
Momo shuddered as she stroked her cock, forcing the tip into Mina's mouth, who began to suckle and lick it. "Mhmm, good girl Mina~" She cooed down at her. Looking up at Izuku, she licked her lips. "I love how you look now Izuku, but you might need to clean yourself up a bit before my turn. And don't worry, I have more than enough for you~"
She watched as Izuku shuddered at the sheer sensuality hidden in her tone. Then, his head cocked to the side, a confused look on his face, before he nodded. Before she could ask what that was about, Izuku's body began to glow.
Izuku was trying out something Nana Shimura had just suggested to him. Using a low percentage of One for All, Izuku concentrated on the stockpiling aspect - and absorbed the semen in his body. His stomach shrunk back to its normal six pack, while the semen's nutrients distributed around his body - with most of it going to his ass. His femboi booty grew from just below Tsuyu's to a dump truck in a league of its own.
Clapping his cheeks together, Izuku threw a smirk over his shoulder as he twerked his shelf-like ass over Mina's body, flinging semen everywhere. "Watcha think Mommy~" He teased her before flipping over, revealing the next big change, which caused Momo's eyes to widen and her cock to buck in Mina's throat. Izuku's cock and balls had grown as well - what had once been a 8 inch cock with average sized balls was now 15 inches (bigger than Mina's), thicker than his own forearm, with a pair of apple sized balls dangling there. "I can't hold the cock at this size for too long, but I wanna fuck Mina's tight little pussy~ I wanna break the so called "Queen" - she'll be our little breeding bitch Mommy~ Don't you want a nice, tight pussy to breed~"
Momo shivered and smiled at Izuku. "My oh my, so bold!" Momo blushed as she withdrew from Mina's mouth, leaving the pink skinned slut gasping for air. Sashaying her hips, Momo moved to right behind Izuku, pressing her tits against his head, rubbing a hand up and down his new shaft. "It's ok with me Izu~ I think you deserve a pet, you've been such a good boy for Mommy~ So go ahead," Momo leaned down, whispering into Izuku's ear, nibbling his lobe as she stroked his cocked "breed that little slut, teach her who she belongs to~"
Izuku cried in pleasure as, with one mighty thrust of his hips, he buried half of his new monster cock inside the still dazed Mina's cunt, forcing the formerly virgin pussy to accommodate his monster length. Mina's eyes shot open as she screamed in pleasure and pain, her back arching.
"Fuck!" She cried in pleasure, thrashing around. "Your mega femboi cock is so big inside me Midori! Fuck me more, please!"
Izuku growled - sounding, to Momo, like an adorable puppy - and picked up speed, pushing more and more of his mighty cock inside Mina's cunt. Soon, he had forced the entirety inside her, punching into her womb, his hips colliding against hers. Wordlessly, Izuku leaned forward and took Mina's half-hard cock inside his mouth, furiously sucking on the organ as he continued to pound away.
Mina was stuck in a seemingly never-ending orgasm, her body flashing as her mind went white. Her mind was quickly emptying all non-critical information, replacing it all with complete servitude to Izuku and Momo. Her eyes rolled back into her head as she came again, her tight pussy clamping around Izuku's cock.
Momo licked her lips as she watched from behind Izuku. She had been pleasuring herself, constantly edging from the very beginning of this sexual encounter, and she was quickly approaching her limit. Her eyes locked onto his bouncing shelf of an ass, and in that moment, she threw it all away. Covering her cock in some of the lube she made earlier, Momo sheathed more than half her cock without hesitation, timing it just right as Izuku hilted himself inside Mina's womb.
Izuku's eyes widened as he felt the massive intruder rearranging his guts. His mouth opened in a wordless scream as he came, a massive eruption of cum flooding Mina's pussy, with the excess quickly spilling out of her used cunt, a small puddle forming. Mina's stomach was bloated, a testament to Izuku's load, and the inevitability of her role as a breeding bitch for the two.
Momo had also lost control, Izuku's tight femboi booty being way too much for her. Finally allowing herself to cum, Momo flooded Izuku's guts, her prodigious loads quickly bloating his stomach, even more so than what he did to Mina, or what Mina did to him earlier. Izuku hiccupped and burped, before a flood of Momo's semen exploded from his mouth, a veritable fountain flying out, decorating the now unconscious, fucked-stupid pink skinned girl below him.
Momo roared as she wrapped her arms around Izuku's waist and, in an impressive display of strength, lifted him up. Moving him up and down her cock, Momo used her new lover as a literal cocksleeve, finally sheathing herself fully inside his ass. Momo continued to cum, her shots not petering off one bit.
Groaning, Momo flexed her pelvis and cock and, with one last mighty roar, finally finished cumming. Turning Izuku's head around, Momo smiled as he was still conscious, if only barely. "Good boy~" She whispered into his ear, planting a loving kiss on his cheek. "Let Mommy take care of you."
Pushing Mina off the bed (after all, pets don't belong on the bed all the time) Momo cuddled with her new boyfriend/cocksock, closing her eyes with Izuku joining her after one last kiss. The two dreamt of their future together - beating down villains during the day, fucking other bitches at night, before climbing into bed with each other, her cock inside him - right where it belonged.