My Harem System In My Hero Academia

Before reading!!! This is a LONG chapter, 3054 words, take your time or just skip it if you want, there is no smut, but a little of character development.

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Yami rolled up outside Ochaco's dingy apartment complex in his black Porsche, the engine purring like a lion. 

The sleek car looked so out of place in the shabby neighbourhood it might as well have been a spaceship. 

He leaned back in the driver's seat, his golden eyes scanning the street until Ochaco came out, her thick hips swaying with every nervous step.

She looked wearing that same blouse-and-shorts combo from their last date. Her fat ass practically bounced with every step, the tight denim clinging to her ass like it was painted on. 

She clutched her little bag like a shield, her cheeks already pink when she saw him.

"Yo, Ochaco," Yami greeted, stepping out to open the door for her, smirking as he took in the view. "Looking fine tonight."

Ochaco blushed harder, stammering, "T-Thanks, Yami…" before climbing in. She settled into the passenger seat, fidgeting like she didn't belong in such a fancy car.

In the backseat, Momo was scrolling on her tablet, her massive tits straining against the tight pink sweater she wore. 

The brown straps across her chest might as well have been there to show off her absurd curves, and her loose black jeans hinted at the thickness of her hips. 

She looked up briefly, giving Ochaco a soft, polite smile. "Good evening, Ochaco. Ready to shop?"

Ochaco nodded, nervous. "Y-Yeah! Totally."

Yami smirked as he pulled away from the street, the Porsche cutting through traffic like butter. "Alright, here's the plan. I'm handling snacks and others; you two handle clothes. Momo, make sure Ochaco doesn't pick anything boring. Got it?"

"Sure," Momo said. She grabbed Ochaco's wrist and practically dragged her into the mall once they arrived.

Inside, Yami made a beeline for the food section while Momo pulled Ochaco into a boutique. 

She wasted no time, diving into racks of clothes and pulling out outfits like a pro. Everything she grabbed was "modest" on the surface but designed to make Ochaco's fat ass look even bigger for Yami.

"Try this," Momo said, handing Ochaco a pair of tight capris and a soft, flowy top. The pants weren't scandalous or anything, but they clung in all the right places, making sure her fat ass was on full display. The blouse balanced it out, giving her a cute, modest vibe.

"M-Momo, isn't this a bit… much?" Ochaco asked, holding the outfit against herself. Her face was bright red and looked like she wanted to shrink into the floor.

"Nonsense," Momo replied smoothly, already rifling through another rack. "Trust me, Yami's going to love it."

Then they hit the swimwear section, and Momo grabbed two bikinis that barely qualified as clothing. One was a basic black piece that hugged the body like a second skin, and the other was a tiny pink micro bikini.

Ochaco's face turned beet red when she saw the pink one. "M-Momo! I can't wear this! It's so indecent!"

Momo smirked. "We'll be at my—ehem, a private beach house. No one's gonna see but Yami. And trust me, you'll want him to see."

By the time they met back up with Yami, Ochaco was practically glowing with embarrassment, clutching her bags like her life depended on it. Momo, meanwhile, looked smug.

Yami raised an eyebrow at the pair. "Looks like you two had fun."

"Only the best," Momo said, smirking. "She'll blow you away this weekend."

Ochaco stayed quiet, her face burning as Yami chuckled, tossing the snacks into the trunk. "Good," he said, smirking. "It'll be a long drive, so you both can take a nap until we arrive."

After everyone got into the car, Yami drove toward their destination—a private beach near Minamiizu, Shizuoka. 

The night sky was still dark, but hints of the sunrise were starting to creep in. The soft hum of the car filled the quiet cabin as they made their way down the empty roads.

Yami kept his eyes on the road as the car glided down the highway. The beach wasn't far now, but the drive had been long enough for Momo to pass out in the backseat, snoring softly. 

Ochaco had dozed off, too, her head reclined on the window. Every so often, she'd mumble something—half-formed words like "Yami" and "strong" slipping from her lips.

As the car rounded a sharp curve, the motion stirred Ochaco awake. She blinked groggily, a string of drool slipping from the corner of her mouth. 

Quickly wiping it away with her hand, she glanced at Yami, her cheeks red with embarrassment.

"Are you okay? You've been driving for hours," she asked, her voice still heavy with sleep.

Yami shrugged casually, his golden eyes locked on the road. "I'm fine. I don't need to eat or sleep as long as I get some sun while petrified."

Ochaco tilted her head, confused and too sleepy to ask more. Instead, she just nodded, brushing her hair back as the horizon began to brighten.

The moment felt almost peaceful until Yami suddenly glanced at her and spoke.

"Hey, Ochaco, I need a favour." She blinked, startled. "A favour? What kind of favour?"

Yami sighed. "The sun's coming up, and I don't want to wake Momo. I need you to help me apply some cream. If I don't, my skin will evaporate when the sunlight hits it."

Ochaco's eyes widened. "Evaporate?! That sounds serious!"

"It is," Yami said, pulling into a gas station and parking in a quiet corner. 

He stepped out of the car, the sky still dark enough to hide them from any onlookers. As Ochaco climbed out, Yami took off his jacket and peeled off his shirt, revealing his massive, muscular torso.

Ochaco froze, her eyes glued to him. His chest and abs were ridiculous, like something straight out of a fitness magazine—or one of those steamy romance novels she secretly read. 

His skin looked smooth but hard like it was carved from stone, and every time he moved, his muscles shifted and flexed in a way that made her stomach flip.

He handed her a bottle of cream, his expression calm. "Hurry up before the sun rises. Just cover everything."

Ochaco nodded dumbly, her fingers trembling as she poured some cream into her hands. Slowly, she reached out and pressed her palms against his chest. The moment her hands made contact, her thoughts spiralled.

'Oh my God. He's so warm. And hard. Like, really hard. Is this what it feels like to touch a man this strong?' She swallowed, her face burning as her fingers traced the lines of his abs. 

'What would it feel like to have these arms wrap around me? To have him pin me down, hold me like I was nothing?'

Her hands drifted lower, spreading the cream over his stomach. She couldn't help but notice how perfectly sculpted every inch of him was. Her mind wandered further, imagining those same muscles moving, flexing—dominating. 'What would it feel like to be crushed against him? To be completely at his mercy?'

Yami cleared his throat, snapping her out of her daze. "You missed a spot," he said, gesturing to his back.

Ochaco stammered an apology, quickly moving behind him to rub the cream over his broad back.

Her fingers pressed into the thick cords of muscle, feeling how solid he was. Her thighs clenched as a wave of heat spread through her body, her mind swimming with thoughts she was too ashamed to admit. 

'He could break me in half… and I'd probably let him.'

Her heart was racing when she finished, and her legs felt like jelly. Yami turned to her, his golden eyes catching hers. "Thanks, Ochaco. You did good."

She nodded weakly, unable to speak as he pulled his shirt back on. She didn't know how she'd survive the rest of the trip.

After an hour or so more of travel, Yami pulled up to Momo's private beachfront resort, the black Porsche crunching softly against the gravel driveway. 

The estate was sprawling but minimalist. The sun hung high, casting warm, golden rays across the property. 

Waves lapped rhythmically against the sand, their faint sound blending with the gentle rustling of the palm trees bordering the resort.

Yami stepped out of the car, his muscular body on display as he stretched and looked around. 

"Nice place, Cow," he called out, smirking as he opened the trunk to pull out the supplies he'd brought.

"Thank you," Momo replied, walking out to greet him. "It's been in my family for years. My parents barely use it anymore, so I figured we might as well enjoy it."

Ochaco stepped out from behind her, clutching the straps of her bag nervously. 

She couldn't believe she was standing at a resort this fancy, and her nerves showed. "Wow, this is… amazing," she said softly, her brown eyes wide as she saw the beach stretching to the horizon.

Yami waved them off. "Don't just stand around. Go get changed while I set up the grill. I'm starving and not waiting all day for food."

Momo raised an eyebrow, crossing her arms. "You're awfully bossy for someone who only paid for the gas here."

"I brought snacks," Yami shot back. "You're the one with the unlimited buffet in your chest, remember?"

Ochaco blushed at their banter, but Momo only sighed and turned toward the house. "Come on, Ochaco. Let's get changed."

A few minutes later, Yami finished setting up the grill and was inspecting the coals when he heard the sound of footsteps behind him. 

He turned, and his golden eyes widened slightly at the sight of the two girls stepping out onto the patio.

Momo wore a sleek black bikini that left little to the imagination. The material clung tightly to her massive tits straining against the thin fabric. 

Her toned stomach glistened faintly in the sunlight, and her wide hips swayed confidently as she walked.

Beside her, Ochaco was a mix of nerves and innocence. She wore a bright pink bikini that highlighted her thick thighs and round, plump ass. 

Her medium-sized tits were perfectly proportioned, her soft skin glowing in the light. She clutched her arms awkwardly, unsure what to do with them, and her face was bright red.

Yami let out a low whistle, leaning against the grill with a smirk. "Damn. You two clean up nice."

Momo rolled her eyes but couldn't hide the faint blush that colored her cheeks. "I know," she said, brushing her dark hair behind her ear. "It's practical for swimming and training."

Ochaco, on the other hand, froze, her heart pounding in her chest. "Th-Thank you, Yami," she stammered, fidgeting nervously. 

'Does he really think I look good? Oh my god, what if this weekend is the weekend? What if I… lose it?' Her face turned even redder at the thought.

Yami shook his head with a grin. "Relax, Ochaco. You look great. Let's see if you can move in that thing, though."

The three spent the next hour playing beach volleyball, with Yami insisting on taking them alone. "Come on, it's the only way to make it fair," he had said, grinning like a cocky bastard.

Momo and Ochaco took it seriously, though. Ochaco was surprisingly competitive, her usual soft and sweet demeanour disappearing the moment she got into the game. 

Momo, on the other hand, was naturally more athletic, her movements sharp and refined. 

They made a solid team, but Yami was a damn wall—blocking, spiking, and smiling the whole time like he had the game in the bag.

"Got it, Momo!" Ochaco called out, her body twisting mid-air as she leapt to spike the ball. 

Her thick thighs flexed, her ass bouncing as she landed with a bit of jiggle. The pink bikini did nothing to hide it—if anything, it made the movement even more obvious.

Standing near the net, Momo raised an eyebrow as she reset her stance. "Not bad, Ochaco," she said, lifting a hand to adjust her tiny top. 

Her massive tits swayed heavily with the motion, bouncing twice before settling back into place. "But you need to aim better. That was too easy to predict."

Yami, of course, caught the ball mid-air with one hand, spinning it on his fingertip before tossing it back up and spiking it hard. It slammed into the sand right between the two girls before either could react.

"You two talk too much," he teased, his golden eyes gleaming with amusement. "And you're slow."

Ochaco huffed, pouting as she jogged to pick up the ball. Her thick ass jiggled with each step, the tiny pink fabric barely covering anything as the string nestled between her plump cheeks.

"We're not slow!" she shot back, tossing the ball to Momo.

"You are," Yami said casually, rolling his shoulders like the match wasn't challenging him. "But don't worry. You'll get there."

Momo smirked, bouncing the ball once before passing it to Ochaco. The subtle movement made her heavy tits sway again, the barely-there black fabric doing its best to contain them. 

"We just need to warm up," she said, calm and confident. "You won't be so smug when we actually start trying."

Yami let out a low chuckle, cracking his neck. "Yeah? Then show me what you got."

After the game, they moved to the beach for a training session. Yami and Momo quickly fell into a rhythm, sprinting across the sand and practising combat moves against the resistance of the waves. 

Ochaco tried to keep up but found herself lagging behind, her breaths coming in short gasps.

She paused to watch them for a moment. Momo's movements were sharp and precise, her powerful thighs propelling her forward with every step. 

Yami, on the other hand, was a force of nature. His muscles rippled as he moved, his speed and strength making every motion look effortless.

Ochaco bit her lip, feeling both admiration and a twinge of insecurity. 'They're so… intense. I want to be like that. I want to be someone Yami takes seriously.'

"Keep moving, Ochaco!" Yami called out, snapping her out of her thoughts. His voice was firm but not unkind. "You're not here to watch."

She nodded, determination filling her chest as she pushed herself to keep up.

As the sun dipped below the horizon, painting the sky in shades of orange and pink, the three gathered around the grill for a cookout. 

Yami flipped burgers and some steak Angela had given him with surprising skill. At the same time, Momo prepared a salad, and Ochaco set out plates and drinks.

"This is really nice," Ochaco said softly, sipping on a Soda-Cola as she watched the fire crackle. "I've never done anything like this before."

Momo smiled, her voice warm. "I'm glad you're enjoying it. We all deserve a break sometimes."

Yami handed her a plate with a perfectly cooked burger, smirking. "Especially when I'm doing all the work."

"You're flipping meat," Momo shot back, rolling her eyes. "Hardly a challenge."

Ochaco giggled, "There is merit in everything, Momo, I flipped burgers to help my family for some years."

As the night deepened, the three rested on the shore; the sound of waves rolling up relaxed them.

The air was warm and salty but not unpleasant, and the scent of grilled food still lingered. Momo excused herself and disappeared into the house without explanation.

Ochaco lay in the sand and looked over at Yami, who was lay beside her, with his legs stretched out and arms crossed behind his head. 

His golden eyes were half-lidded, relaxed in a way she never thought he could. "You look like you're actually enjoying yourself," she teased.

Yami smirked but didn't open his eyes. "Yeah, well, good food, decent company. Could be worse."

Before Ochaco could respond, Momo returned, holding a small remote and wearing a mischievous smile. "I called in a favour," she announced.

She pressed the button.

A second later, the sky erupted in colour. Blues, reds, golds—all burst above them, reflecting off the ocean waves. The explosions weren't too loud, just right for the moment.

Ochaco gasped, her brown eyes going wide as she leaned forward. "Momo… this is amazing!"

Momo smiled, settling down beside them. "I thought it would be a nice way to end the night."

Still, on the sand, Yami tilted his head slightly, watching the sky. The bursts of colour reflected in his golden irises, making them glow in the dim light. 

He let out a low chuckle. "Not bad, Cow," he murmured. "Not bad at all."

Ochaco tore her gaze from the fireworks and looked at him instead. He looked so at ease that something about him in that moment felt open.

Vulnerable, even. She hesitated before asking, "Do you think stuff like this—fireworks, celebrations—do you think it's only special if you don't see it all the time?"

Yami blinked, considering her question. "Probably," he admitted. "People like things more when they don't have them all the time. That's just how we are. If you saw fireworks every night, they'd be nothing."

Ochaco nodded, turning back toward the sky. "But… if you like something enough, wouldn't you want to share it? Even if you've seen it a million times?"

Yami smirked, eyes still fixed on the sky. "Depends. Some things are meant to be shared. Other things? They lose their value if too many people get a taste."

Ochaco glanced at him again, something in his voice making her heart race. She wasn't dumb. She knew what he was really talking about. 

Her fingers curled slightly against the sand. "So… what makes something worth keeping for yourself?" she asked, her voice quieter.

Yami looked back at the sky, his golden gaze sharp, unreadable. "Depends on the person," he said simply. "Some people want one big thing that belongs only to them. Others like having options."

Ochaco swallowed. She knew exactly what he meant.

The fireworks continued exploding above them, but her attention was locked on him. 

Sitting beside them, Momo sipped her drink, watching the exchange with an amused glint in her eye.

Ochaco bit her lip. She knew Yami wasn't the type to belong to just one person. He had too much presence and too much energy to be tied down. And yet, as the fireworks reflected in his eyes, she wondered—was she willing to share?