My Harem System In My Hero Academia

Yami, Momo, Ochaco, and Hatsume sat down to eat lunch. Yami and Momo tore through their food like wild animals, barely stopping to breathe. 

Across from them, Ochaco and Hatsume ate at a much slower pace. Ochaco and Hatsume watched the two eat like starving wolves, both a little disturbed at how quickly they devoured their meals; even for Ochaco, who had eaten four people's worth of meal, Momo ate just too much.

Once they finished, Momo leaned back with a satisfied sigh while Yami casually wiped his mouth with the back of his hand. Just as they were about to relax, Momo and Ochaco's phones buzzed.

Kaminari had sent a message to the Class 1-A group chat:

[Kaminari: Yo, all the girls in class gotta wear cheerleader uniforms! Aizawa said so. Get moving!]

Momo frowned, immediately suspicious. As class president, she knew Aizawa never mentioned anything about this. "That doesn't sound right," she said, rereading the message.

Yami, however, grinned. "I don't know, Cow. I'd love to see your udders bouncing in a cheerleader outfit."

Momo's face turned red, and before she could even think, she grabbed Ochaco's hand. "We're going."

Ochaco barely had time to react before Momo dragged her away, leaving Yami and Hatsume to finish their food.

As the girls arrived, the loudspeakers crackled to life again.

"Before we move on to the final event, I've got some good news for those who were eliminated!" Present Mic's voice boomed through the stadium, filled with energy.

The audience erupted in cheers, eager to see what was next.

"Since this is a Sports Festival, we've prepared a little something to keep the hype going!" he announced.

The giant screen behind him flashed bright images of cheerleaders in short skirts and tight tops, waving pom-poms in the air.

"We even shipped in some cheerleaders all the way from the U.S. to get you guys pumped up!"

The crowd roared. Some students cheered, others looked confused—until they turned toward Class 1-A.

Standing in a straight line, the girls of Class 1-A were dressed in orange, green and white cheerleader uniforms. The tops were way too small, barely able to contain some of their bodies, and the skirts were ridiculously short, stopping just below the ass.

"CLASS A?! WHY?!" Jiro screamed, her voice cracking as she pulled down the hem of her skirt, her flat chest and plain body barely filling out the outfit.

Momo stood next to her, arms crossed, looking pissed. The cheerleader top was fighting for its life, trying to contain her massive tits, the deep cleavage straining against the fabric. The skirt barely covered her thick, round ass, her perfect curves on full display.

Hagakure bounced excitedly, her invisible body making the skirt and top float on their own. "Why not just go with it? It could be fun!"

Ashido twirled, her huge pink tits bouncing with every move. Her big, round ass peeked out from under the tiny skirt. "Yeah! We might as well enjoy it!"

Ochaco stood there stiffly, her face red. Her medium tits were easy enough to cover, but her gigantic ass was a different problem. The skirt barely covered anything, and every little move made it ride up more.

Meanwhile, Kaminari and Mineta were grinning like idiots, watching their plan come together perfectly—until Jiro turned, her eyes blazing.

"YOU TRICKED US, KAMINARI!" she shrieked.

Kaminari paled, throwing up his hands. "W-Wait! It was Aizawa's idea!"

"LIAR!"

Momo sighed, rubbing her temples. How did I let myself get talked into this?

'Oh right, Yami…'

But it was too late. The crowd was loving every second of it.

Just as the cheerleading performance wrapped up, the giant screen flashed again, shifting everyone's attention.

"And now, it's time for the final event!" Present Mic declared.

The stadium erupted into a frenzy as the screen revealed a massive tournament bracket.

"We're settling this with a one-on-one battle tournament!"

Momo exhaled, relieved to finally be done with the ridiculous cheerleader stunt.

Midnight took center stage, standing tall and confident with her signature whip in hand. She smirked, the spotlight catching the curve of her body as she lifted a box labelled "Lots."

"The matchups will be decided by drawing lots!" she announced. "Once that's settled, we'll move on to the festivities, and then… the tournament itself!"

Kirishima grinned, cracking his knuckles. "A tournament, huh? We're gonna be up in the same ring as the pros! This is sick!"

Ashido crossed her arms under her breasts, "The format's always different, but most years, it ends up as some kind of head-to-head fight."

"Was it a tournament last year, too?" Kaminari asked, looking over at Sero.

Sero shrugged. "Nah, last year was foam sword fighting. It was kinda dumb."

Midnight clapped her hands together as the students whispered among themselves, drawing their attention. "Now, let's start with the first-place team!"

Before she could continue, a hand shot up.

"Excuse me," Hatsume Mei called out, adjusting her goggles.

Midnight tilted her head. "Yes?"

Hatsume grinned. "I'm dropping out."

The students blinked.

"Wait, what?" Kaminari said, voice cracking.

"Yeah, I already got what I needed," Hatsume said, tapping the side of her goggles. "Plenty of attention on my babies, a couple of business deals lined up, and—most importantly—an extremely wealthy sugar daddy to fund my research."

The stadium fell into stunned silence.

Yami groaned, rubbing his temples. "Investor, Hatsume. You mean an investor."

Hatsume winked. "Same thing, right?"

Momo exhaled, pinching the bridge of her nose. "You are… completely shameless."

"And proud of it!" Hatsume said before casually strolling off, waving over her shoulder.

"I was talking about Yami..." Momo said before glaring at him, just for Yami to shrug his shoulders.

Midnight barely missed a beat before continuing, her smile playful. "Well then! That means we'll need some replacements."

She turned to the rankings displayed on the massive screen. "Two members from Shinso's team have also withdrawn, meaning the next highest-ranked students will take their places!"

From the Class 1-B section, three students stepped forward:

Itsuka Kendo, the class president; Setsuna Tokage, a recommended student; and Yui Kodai, a regular student with a quiet demeanour, simply nodded and stepped forward, unfazed by the change.

Yami looked over to them and remembered that while waiting, he thought it would be funny to break the ice anytime Todoroki froze the ground.

"Guess we're in," Kendo said, rolling her shoulders.

"No hard feelings, class 1-A," Tokage added with a smirk.

Kodai said nothing, merely giving a slight nod of acknowledgement.

Midnight clapped her hands. "Wonderful! Now that the top sixteen are locked in, it's time to determine the matchups!"

She shook the box filled with numbers and smirked. "Each of you will draw a lot to determine your opponent."

One by one, the students stepped forward.

Yami strolled up lazily, pulled out a slip of paper, and unfolded it. "One." He smirked. "Guess I'm up first."

Momo was next, unfolding hers. "Five."

Ochaco took a deep breath and pulled hers. "Three!"

Todoroki, unreadable as always, glanced at his slip. "Two"

The numbers were revealed individually until the full bracket was displayed on the massive screen above the stadium.

The big screen flashed with the tournament bracket, and the matchups were locked in:

Yami Iwatani vs. Setsuna Tokage

Shoto Todoroki vs. Denki Kaminari

Ochaco Uraraka vs. Katsuki Bakugo

Eijiro Kirishima vs. Kyoka Jiro

Momo Yaoyorozu vs. Mina Ashido

Tenya Iida vs. Hitoshi Shinso

Yui Kodai vs. Mashirao Ojiro

Itsuka Kendo vs. Hanta Sero

Yami cracked his neck, looking up at the bracket with a smirk. "First match, Bluetooth girl. Second match, Ice-boy. Not bad, not bad at all."

Meanwhile, Ochaco stared at her name next to Bakugo's, her face slowly losing colour. 

Yami turned to walk over to Momo as he thought, 'SNAIL...' 

'IF YOU'RE LISTENING, PLEASE LET ME BEAT THE LIVING SHIT OUT OF BAKUGO. OR AT LEAST LET MOMO DO IT FOR ME!'

The loudspeakers crackled, and Present Mic's voice boomed over the stadium.

"Alright, folks! We'll set the tournament aside for now because it's time for some thrill-a-minute festivities!"

The audience roared in excitement.

"These events are optional, but hey—they give you extra credit if you join!"

Before he even finished his sentence, Yami and Momo turned away simultaneously, walking off the stage like they had somewhere much better to be.

"So," Yami said, hands in his pockets, "wanna go grab something to eat?"

Momo nodded. "I spotted a strawberry cake stand near the—"

And just like that, they were gone.

Meanwhile, the rest of the class stuck around, having fun with the side events. The cheerleading squad performed their routine again, and the crowd ate it up. 

The girls mostly went along with it, except for Jiro, who looked like she wanted to die from embarrassment.

Her eyes darted between Ochaco and Ashido, both bouncing effortlessly, their thick thighs and big asses looking perfect in the tight cheer outfits. Jiro glanced down at herself, then back at them.

'Who is even writing this manga… a pervert? Am I in a hentai, and no one told me?'

Yami and Momo grabbed some strawberry cake and ate in peace. After finishing, they both got the same idea—to find a quiet spot and have a quicky before the next event. 

Walking behind the stadium into a wooded area, they figured it'd be the perfect place.

That was until they saw Todoroki kneeling near an outside corner of the stadium.

Yami smirked. "Well, well, if it isn't the ice prince himself."

Momo rolled her eyes, already knowing where this was going. "I swear to God, Yami…"

Yami ignored her, strolling over to Todoroki. 

If there were two things Yami liked in a fight, it was a good fight and a deserved fight, and Yami didn't really have any beef with Todoroki, but...

'I'll have to wake him up from that stupid restriction he has on himself.'

Momo, on the other hand, was already done with his bullshit. She sighed, adjusting her tight cheerleader uniform. "I'll go find a good spot," she muttered, walking deeper into the trees.

Yami crouched beside Todoroki, resting his chin on his fist like he was analyzing some rare creature. "You look like a sad anime protagonist right now. Something on your mind, snowflake?"

Todoroki didn't answer, just staring at the ground deep in thought.

Yami snorted. "Lemme guess, daddy issues? Oh wait, we already knew that. What is it this time? Did daddy not text you good luck? Did he send you another inspirational message like, 'Use your damn fire, son'?"

Todoroki's fist clenched, but he still said nothing.

Yami leaned in, voice dripping with amusement. "Y'know, it's funny, off the recommended students. Momo studies her ass off, trains harder than anyone I know, including myself, and is one of the best kendo fighters in the country, including myself. And you?" He tilted his head. 

"You're just riding on your mommies' and daddies' quirk. The same quirk you won't even use properly."

Todoroki's jaw tightened.

"Let's be real," Yami continued, grinning. "Without your fire, you're just a weaker version of me. I can freeze shit, too, y'know? But unlike you, I don't handicap myself like an idiot."

Still nothing.

Yami sighed dramatically. "Man, I hope you don't fight me with just your ice. That'd be boring as hell. I wanna see you actually try, princess. Or are you scared? What if you go all out and still lose? Then what, huh? You gonna cry in the corner again?"

Todoroki finally looked up, his heterochromatic eyes burning—not with fire, but with pure, silent rage.

Yami smirked. "There it is."

Todoroki stood, his expression calm but his aura tense. "You talk too much," he said simply.

Yami grinned, and without another word, Todoroki turned and walked away, his posture stiff, his hands curling into fists at his sides.

Yami sighed, satisfied. "That should do it."

Just then, Momo reappeared, looking unimpressed. "Are you done tormenting him?" she asked, arms crossed under her massive tits.

"Yup," Yami said cheerfully. "Now, where's that quiet spot you found?"

Momo sighed but grabbed his wrist, dragging him further into the trees, her grip firm but not angry. 

"You were way too rude to him," she scolded, not even looking back at him. "I swear, Yami, if I weren't your cow, I wouldn't even consider dating you."

She stopped walking and turned to face him, her dark eyes filled with some frustration. Slowly, she pulled at the hem of her tiny cheerleader uniform, reabsorbing the fabric into her body, leaving her naked, flawless skin glowing under the filtered sunlight.

Yami smirked but didn't say anything—yet.

Momo leaned against a thick tree trunk, her arms crossed under her massive tits, watching him with a sharp gaze. "I don't get you sometimes," she admitted. 

"You push people in ways no normal person would. Todoroki doesn't need to be humiliated; he needs to understand that his quirk is his own. That's what you were trying to do, right?"

Yami stepped closer, pressing her against the rough bark, his body against hers. "Yeah," he murmured, his golden eyes locking onto hers. 

"That's exactly what I was doing. That dumbass thinks his fire is his father's. But just like how [Pillar Man] isn't the same as my father's 'Rock Human,' his quirk belongs to him. Not his bastard father."

Momo saw the change in his expression the moment he mentioned his dad. 

A sharp edge cut into his usual smug grin, his jaw clenching slightly, his muscles tensing. She barely had time to react before he grabbed her hips and lifted her slightly, pinning her entirely against the tree.

"Yami—!" she gasped, but it was too late.

His cock was already pressing against her dripping lips, her body already betraying her. He didn't wait. He pushed in all at once, stretching her tight walls around his thick cock, making her arch against the tree.

Momo let out a breathless moan, her nails digging into his shoulders. "S-So rough," she panted, biting her lip as her legs wrapped around his waist.

"Yeah?" Yami growled, his hands gripping her thighs tighter. "I'll show you rough."

He started pounding into her without restraint, his hips slamming against hers, the force of each thrust making the tree shake. 

Momo cried out, her fingers slipping from his shoulders to his back, clawing at him desperately. The mix of pleasure and pain sent heat flooding through her body, her breasts bouncing against his chest.

Yami gritted his teeth as he moved faster. He poured all that pent-up frustration into Momo's body, using her to ground himself.

"Y-Yami—!" she gasped, her thighs trembling around him as he drilled into her deeper, hitting spots that made her mind go blank.

"Mine," he muttered, grabbing her chin and kissing her hard, stealing the air from her lungs as he fucked her even rougher.

Momo's walls clenched around him, her body tightening as she was pushed over the edge, her orgasm ripping through her with shuddering intensity. "A-Ah—! C-Coming—!" she choked out, her legs squeezing around his waist.

Yami wasn't far behind. The moment her pussy milked his cock, he groaned, burying himself as deep as possible before spilling his hot cum inside her. 

Thick ropes of it filled her up, her stomach twitching from the sheer amount.

He pulled out slowly, watching as his cum dripped from her gaping pussy, making a mess of her thighs and the tree bark behind her. Momo shivered, her body spent, her mind foggy from the intensity.

"F-Fuck…" she muttered, trying to catch her breath.

Yami smirked, running a hand down her sweat-slicked back. "That was fun."

Momo shot him a glare, though no real anger was behind it. "We need to get back before anyone notices," she said, still shaky. She activated her quirk again with a deep breath, quickly reforming her cheerleader uniform.

As she adjusted the tiny skirt and top, she created a special pair of wet-absorbing panties and, without hesitation, a plug. 

She bit her lip as she pushed it inside, sealing Yami's load within her, making sure it wouldn't leak out during the rest of the festival.

Yami raised an eyebrow, amused. "Enjoying keeping me inside you that much, huh?"

Momo smirked this time, the afterglow giving her a rare, playful expression. "You're not allowed to pull out for a reason."

Yami chuckled but then exhaled, running a hand through his messy black hair. "By the way… sorry for being so harsh to Todoroki and being so rough with you... I... I don't know what came to me."

Momo looked at him momentarily, then smiled, slipping her hand into his and intertwining their fingers. "I love you," she said simply. "No matter what happens."

Yami squeezed her hand back, and they just leaned against the tree together, resting in the cool shade, waiting for the matches to begin.