Chapter Text
Izuku was actually getting pretty good.
The green haired boy huffed a slight labored breath as he vaulted over another obstacle in the course, going for a new personal best this time.
The UA entrance exams were only in a few days, and he had spent the last two years of high-school preparing to get into the superhero university.
He was going to have to work twice as hard to receive even a third of the recognition that other applicants would get.
He threw a billy club off of a steel beam and ran forward as it ricocheted into the side of a dummy's head.
He caught the club as it bounced back to him and holstered it, jumping high onto a trapeze and making a full spin around it before launching off and kicking a larger dummy in the chest, skating along it past the finish line.
He cheered at the time result and gave a short hop.
Sure, he didn't stand a chance against some of the greater quirks out there, and maybe he looked a little small and slim compared to the hulking frames of his contemporaries.
But Izuku was smart, determined, and if nothing else, he could take a beating without complaints.
He picked up his bag and looked out into the orange setting sun on the beach, finally headed home after training for hours.
“I'm ready to go beyond!!” He cheered with a fierce smile.
-
“Midoriya, don't you think you ought to be more realistic?”
The class broke out in laughter as the teacher read off their combined applications.
Everyone wanted to go to one hero school or another, but for some reason, their teacher felt obligated to call Izuku out specifically.
All but one of the class jeered at him, but Izuku just let it roll off. Eighteen years of that would desensitize anyone.
“Why be realistic when the impossible is totally possible, Sensei?” He asked with a steadfast smile.
“Because you're unevolved and powerless like a monkey?!” Someone coughed out, to a roar of explosive laughter.
Izuku rolled his eyes and smiled calmly, clearing his throat as they finally quieted down.
“Well, I may not be able to… pull my eyeballs from their sockets, or have a plank of wood for a face… but somehow I think I'll manage.” He smirked at the thought of some of the arrogance his classmates displayed.
A bald student growled lightly.
“You think you're better than us, Midoriya?”
Izuku was quick to shake his head and throw his hands up in mock surrender.
“No way! …I know that I could beat nearly anyone here in a fight, is all.”
“Don't antagonize anyone, Midoriya-” Their teacher barely sighed before it happened.
The only person who wasn't laughing, she made her way over to Izuku's desk and placed her fingertips down on the wood.
boom!
Izuku flew back onto the floor and breathed quickly in a smaller panic than usual for him.
“I d-didn't mean you, Kacchan!” He stuttered fearfully as smoke rose from her palm, a simmering crimson glare pierced into him just below her spiky blond bangs and matching ponytail.
“Bakugo, get back in your seat-”
“Save it, teach.” She commanded with her usual rough, tomboyish tone.
“After all this time, you're still going on about this.” She spoke down to him with disgust heavy in her voice.
“A weakling like you would get killed in the entrance exam. So let me tell you right now-”
Another explosion went off as Katsumi punched into her own palm in a wordless threat.
“Don't let me catch you even thinking of applying, Deku.”
The strongest person in Izuku's life looked at him with so much disdain that he felt himself returning back to the scared crybaby he was not too long ago.
“Haha! You heard her, Dek-”
“Shut it before I rip them outta your sockets, Stretchy-balls!!” Katsumi roared.
Making the class turn on the bald boy with their laughter as she stomped back to her seat and turned a glare his way.
“Don't ever fucking think of calling him that again.” She seethed murderously, scaring him into silence.
Izuku didn't notice and crawled back into his seat. His ego kept perfectly in check as he was silent for the rest of class.
-
This was it.
Izuku stood at the gates of UA with his heart pounding.
This moment would change his entire life, decide his entire future.
He had worked so hard for his chance, now he had to make the most of it.
He took a step forward towards his destiny and exhaled.
“What. The. FUCK?!!”
Izuku locked up in terror as the footsteps marched his way.
He showed up so early, just to avoid her. And still-
“DE-”
He should have figured that even with punctuality, he could never beat Kacchan.
“KUUU!!!”
She screamed with murderous rage and Izuku shook up and down in heart stopping fear.
He should run, run and never look back. Pray that she would be too busy with hero work to exact her revenge. Because he couldn't pray that she would forget.
Kacchan never forgot anything.
With one exception.
The thought made Izuku blush lightly as he decided to stand his ground.
No one could stop this. Not even her.
Katsumi stared wide-eyed into Izuku's frightened face before her rageful grimace gained a hint of confusion.
Izuku clenched his fists as she looked him up and down, judging silently.
She straightened her posture and took a deep breath.
“Hey-” Izuku yelped as she grabbed his wrist and started to march away from the school.
“L-let go of me, Kacchan!”
“Insane that you still call me that, you damn nerd.” She commented with a huff while continuing to drag him away.
Katsumi threw him into an alley and shoved him back against a wall.
She breathed heavily and kept up a constant glare, not speaking another word as Izuku trembled.
He avoided her gaze and turned his lip up in a pouting frown.
“K-Kacchan.” He coughed to steady himself.
“If I get into UA, that doesn't mean that you won't. And- I have to try.”
She just continued to stare with constant aggression, making Izuku waver as she still wouldn't speak.
“If I'm so weak and worthless- if I'm still D-deku, then you have nothing to worry about.”
She let out a warning exhale through her nose that made Izuku's teeth chatter.
“Damn it, Katsumi, this is my dream!” He complained, trying to push past her to no avail as she shoved him back again.
“Me being a hero is up to UA! Not you!”
“Bullshit!!” She raged at last.
Izuku's eyes squeezed shut as she gripped his uniform shirt.
“What are you gonna do, Kacchan?! Beat me up if you want! Villains will do so much worse! If UA finds out, you'll never get in! You can't hurt me in a way that matters!”
“DON'T YOU THINK I KNOW THAT?!” She bellowed angrily, tearing open his uniform jacket and rifling through his pockets.
“Hey! S-stop!”
Izuku's mind raced as she aggressively patted him down.
Did she want to steal his ID and make him unable to get in-
“I fuckin’ knew it.” She huffed in vindication.
Izuku opened his eyes and saw his wallet in her hand, open to one of his oldest, most prized possessions.
The holographic card of All Might smiled up at the two of them, the blonde hero in his red and blue suit giving a thumbs up.
If she ruined it, Izuku could never forgive her. He glared and spoke seriously. “Kacchan, that is mine. Don't even think about-”
Her fist clenched inches in front of his face with a small explosion as Izuku flinched.
“Don't act like you forgot!” She shouted with annoyance, digging into the inside pocket of the white and blue letterman jacket she wore over her uniform.
She held her own identical card up in a protective case.
Izuku trembled worse than ever before. The sheer uncomfortability that wracked his body and mind and heart and soul threatened to eat him alive.
“...I thought… y-you forgot. We were f-five, Kacchan-”
“I don't go back on my word.” She rumbled.
Izuku didn't know what he was feeling, but his eyes started to mist up after so much time spent trying to stop his crying habit.
“Fuckin’ not up to me…” Katsumi grinned in angry disbelief at Izuku's audacity to say such a thing, before her face gained a pinch of pink as she drew closer.
“YOU'RE GONNA BE MY HUSBAND!!” She screeched with the fury of a woman scorned.
Izuku frantically motioned for her to quiet down and blushed furiously.
“Kacchan, we were kids! I'm Deku, remember?! Useless, blockhead, w-wooden doll-”
“My doll.” Katsumi growled and cupped Izuku's jaw in a hand.
Izuku couldn't believe she was pulling this card, literally.
“You're gonna tell me that after thirteen years of hating me, now-”
“Shut- up-”
“Mmmf!”
Izuku's eyes widened as Katsumi leaned forward and shut him up.
Kissing seemed like an awful verb to use.
Everything with Kacchan was a fight.
Her tongue grabbed his in a chokehold, giving Izuku no choice but to taste her as he stared forward in disbelief.
It lasted for thirty whole seconds until she pulled back, glistening spit stretching between their mouths. She held Izuku up as he gasped in a daze.
“Mnnn K-Kacchan… w-why'd you-”
“Would you close your damn eyes?! At least try to be romantic!” She chided with a blush. “Fuck, you're bad at this-”
“Kacchan stop!!” He screamed and made even Katsumi surprised at his tone.
She tilted her head as he started to tear up.
Izuku wiped at his eyes and failed to control his breathing.
“Y-you always do this to me! Why do you pretend you care when- when you became some dumb bully years ago!!”
She scoffed and wiped at his tears with her thumbs, glaring at him all the while.
“You're in the doghouse, duh!!” Katsumi flicked his forehead and made Izuku shrink in confusion.
“W-what are you even-”
“This is why my grades are higher than yours!” She growled and pushed at his chest with her pointer finger.
“We haven't had a real conversation in ten years!” Izuku complained as Katsumi crossed her arms.
“We've been arguing for a damn decade because you won't listen to me! You’re not gonna be a hero, Nerd!!” Katsumi complained in kind.
Izuku's mouth hung open. He was absolutely certain that he was the most confused man on earth.
Katsumi sighed and crossed her arms.
“Dumbass…” She spoke under her breath, inhaling to start a lecture.
“For one thing, there are stories of the greatest heroes, how they come from nowhere, like our shitty school. So I'm gonna be the only UA applicant from there!”
Izuku was stunned by her selfishness, enough that she could keep going uninterrupted.
“And second. My parents are together for the same reason you and I are.”
Izuku frowned as he thought back.
~
It was a bright sunny day. They both rushed happily out of a local convenience store.
“If mine isn't the best, I'm taking yours!” A young Katsumi complained with a pout.
Izuku held the plastic in his small hands and gave a shy laugh.
“As long as you let me borrow it from time to time, K-kacchan…”
Katsumi kept up her pout and rolled her eyes.
“Hmph. Okay, three, two-”
They ripped open their cards’ packaging and both gasped in awe.
“YES!!”
“I f-feel so lucky!”
Katsumi looked over and saw Izuku holding the same card she was.
“...Seriously? …’s gotta mean something…” She murmured with a blush.
“Kacchan?” Izuku leaned into her face with concern.
Katsumi blushed harder and shoved him away with her palm against his nose, making Izuku stumble back onto the ground.
“O-oww, Kacchan…” He whimpered, rubbing at his nose before realizing that she was standing over him.
“Izu. When we grow up, we're getting married.” She decided with a red glare.
Izuku winced at her intensity and didn't want to admit how much he didn't know about her request.
“O-okay…”
“Pinky-swear!” She growled while holding out her digit.
Izuku locked fingers with her after a quick jump in fear.
“Ah- Ow, Kacchan! You're doing it too tight!”
“BE A MAN!!” She roared uncaringly.
~
“My mom chose my dad, and I chose you. If you could get your stupid mossy head outta the clouds for a second, you might think about how your Wife feels!!” She snarled with annoyance.
“You're not my W-w-wife, K-kacchan!! And- if you really cared about me, you would respect my choices and not get in the way of what I'm planning-” Izuku squirmed with a beet red face as Katsumi refused to let him go.
“If my Mom let my Dad choose, I wouldn't even be here to be the future number one hero! WE ALREADY HAVE PLANS, DUMBASS!!” She shook him by the collar as Izuku held back a whine.
“I'm- going to be a hero, Kacchan!!”
“YOU'RE GONNA STAY AT HOME AND WATCH OUR KIDS WHILE I'M OUT KICKING ASS!! AND YOU'RE GONNA GIVE ME ANOTHER AS SOON AS I'M IN THE MOOD FOR ONE!!” She barked into his face with a blush that was barely visible.
Izuku's back straightened in shock as he took a shaky breath, really letting Katsumi's deranged thought process mull around in brain.
…
No. He had to get away from her.
“Hnng- you-” He struggled to break her hold as she puffed a steaming breath from her nose.
“I fucking knew I'd have to show you… I've been planning to totally kick your dick's ass, Deku!” Katsumi raged while unbuttoning his collar despite his thrashing.
“You think I didn't notice how fucking hard that kiss made you?!” She asked with a fierce grin, the one she had whenever she was deep in a fight.
Izuku gurgled as Katsumi's hand cupped the bulge straining in his pants.
“I know I can't stop you by beating the shit out of you.” She simmered with the barest traces of respect in her tone, leaning close and making Izuku yelp as she dug her teeth into the flesh of his neck.
“Hmmrrgghh- Kacchaaan-uhhh~”
“So I'll just beat this until you do what I want.” She spoke into his soft flesh while groping and squeezing down below.
Izuku gasped as she finally pulled away, his eyes shut tight as his uniform shirt hung off of his shoulder in its ruined state.
“K-kacchan, listen to me!!”
She unzipped his pants and slapped his hands away while tugging them down.
“Fuck- why's it so big?” She huffed before glaring again.
“DON'T THINK FOR A SECOND THAT IT'LL STOP ME!!”
Izuku growled out a groan as Katsumi wrenched out his oversized fuckslab and started to pump despite his cries.
“Kacchan, gguhh~ c-cut it out!!”
“This is how my mom gets my dad to do whatever she wants! It'll work on you, too!!” She decided while glaring up at him, squatting low until her thick ass wrapped in black athletic shorts popped out from behind her uniform skirt.
Izuku gasped weakly as Katsumi took control. Like everything else, she was a prodigy from the first try.
“All the videos I watched showed me exactly what to do to you! You're going down, loser!!”
Her left hand groped and appraised his balls while her right rhythmically pumped up and down his veiny shaft.
Izuku wanted to complain that she only cared about herself, but it couldn't be further from the truth.
Katsumi listened for the pitch of his whines to find his weakest spots, the perfect rhythm.
fapfapfapfap The noises rang out in the empty alleyway as Katsumi proved how little got past her.
“Kahh- K-KACCHAN❤️!!!” Izuku's eyes shot open as his jaw clenched, his hips bucking into Katsumi's hand as a noisy spluuurt!! Sounded off with the release of cream from the head of his cock, winking as his kegel muscles flexed at her command.
“Ohhh- gghunn… eek!!”
“Did you just fuckin’ eek?” Katsumi asked with her usual bullying laugh, pumping Izuku's cock with extra vigor before it could even go half-soft.
“Uggghh- w-wait, Kacchan, p-please! I c-can't-” Izuku stammered and reached for her palm, his legs wobbling as he tried to stay upright.
“You've always been annoyingly cute. And then somewhere down the line, I couldn't make you cry for me like you used to…” Katsumi frowned until she started to get her wish.
Izuku began to hiccup as if he ate directly off of her usual plate. The spice of pleasure wracking his body until he crashed down onto his ass and made Katsumi have to crawl closer to his lap.
She pushed his legs apart to stop him from hiding his weakness and kept stroking, making messy cream coat her hands as she started to lap at his pink head.
“Hih- K-KACCHAN!!” He whined as loud as she wanted, tears welling up as he realized how swiftly he was losing.
“Guess I'll just do this whenever I want you sweet for me.” She mused spitefully.
“KACCHAN- HIIH❤️ STOP❤️❤️!!”
Clear discharge ran from his nose as the tears fell. It was like Katsumi force fed him a ghost pepper as he failed to keep any semblance of composure.
“You know I only go for perfect victories, nerd!!” She grinned and pumped up and down.
“We ain't stopping until you can't feel your legs!!” She sneered fiercely, lapping at his cockhole with intense cruelty.
“Nnnhoo Kacchaaan!!”
“UNTIL YOU'RE KNOCKED OUT FOR THE WHOLE FUCKIN’ DAY!!”
Now that she had finished him once, round two was a foregone conclusion.
fapfapfapfapfapfap❤️
Izuku raged through tightly grit teeth as she ruined him expertly, groping the right spots, kissing just as he started to adapt.
“Katsumiii- God- KATSUMI YOU CAN'T FUCKING DO THIS❤️!!” He screamed impotently, sniffling as his balls started to cramp up to wash away his consciousness.
She huffed a laugh at his rage and smirked. “You always try to sound like me when you're angry, Deku. I totally notice-”
“F-FUCK YOU❤️❤️!!!” Izuku sobbed in utter defeat, Katsumi making him into a sore-dicked loser.
She made a tutting noise and squeezed at his cramping nuts, watching his face contort as they kept gurgling in her fingers and throbbed, ready to blow.
“Let it the fuck out for me~”
“Kacchaaaaan❤️❤️❤️!!!” Izuku squealed with a girly moan, his eyes crossing together in a desperate ahegao as his cock- exploded.
SPLUUURT❤️ Izuku's balls pulled tight against his cock as he came and shot ropes up the brick wall.
Izuku trembled tearfully as Katsumi milked out all he had left, leaving him drooling and leaning against her with his eyes dull and mindbroken.
His head shook back and forth against her shoulder as she just kept stroking. Mercy was never a thought in her mind.
Kacchan pushed him back, letting his head hang as he slumped against the brick wall and his cock oozed leftover cum into the street.
She stared at his hollow expression and stood up, dusting off her jacket and mushing his forehead with two fingers.
“I'll be back for you after I get first place in the entrance exam. Try not to lose so quick next time, and bet your ass, there's gonna be a next time, nerd.” Katsumi grinned, gripping Izuku’s chin and staring into his dazed eyes as he murmured incoherently.
-
Izuku spent the next day and a half in a fugue state.
Kacchan had stolen his chance to follow his dreams, his first kiss, and even his first sexual encounter.
He walked out of UA's general education exam with darkness beneath his eyes, still limping after Kacchan decided his fate for him.
“Hiya!”
His head barely tilted towards the black-haired girl who wore glasses, holding the straps of her bag as she walked next to him.
“Hard test, huh?! Do you think you passed?” She laughed nervously while Izuku trudged along.
“Uh huh…” He nodded with exhaustion.
“Cool! Maybe we'll be classmates!” She smiled brightly.
“You wanna trade numbers? I'm-”
“Sorry, no.” Izuku mumbled, the drained feeling that persisted since the day before left him delirious and slightly high as he stumbled away with a dread-filled laugh.
“My Wife wouldn't like that…”