My Harem System In My Hero Academia

The door to Yami's house creaked open as Yami and Momo stepped inside. 

It was already late; the streets outside were quiet and empty. The soft glow of the living room light spilt out into the hallway, and the smell of something cooking filled the air.

Angela stood in the kitchen, her apron wrapped around her curvy MILF figure over her loose black kimono, humming softly. When she heard the door, she quickly grabbed a towel and dried her hands, heading toward the front to greet them.

"Welcome home, sweetheart!" Angela's voice was sweet, warm, and welcoming, her smile widening when she saw Momo standing beside Yami.

Momo blushed faintly, her eyes trailing down to Angela's massive breasts, which pressed tightly against the apron and kimono. 'She's huge…' Momo thought to herself, feeling her chest pressing against the sweater. 

She was still a cup or two smaller than Angela, but she'd grown a lot over the years. 'Maybe in a few months…'

Angela noticed Momo's gaze but didn't say anything. Instead, she gestured toward the kitchen. "I made steak and rice. You two must be hungry."

Yami led Momo to the dining table, pulling out a chair for her before sitting down across from her. Angela brought out the plates and set them down carefully.

"Thanks, Mom," Yami said casually, digging into his food.

Momo watched Yami reach for a small glass container on the table. It wasn't labelled, but he opened it and poured a thick, creamy liquid into his coffee. Momo's curiosity got the better of her.

"Can I have some of that?" she asked, nodding toward the container.

Angela froze for a moment, her cheeks flushing. "Oh… um… of course."

Yami handed the container to Momo without a second thought. She poured some of the liquid into her tea, stirring it gently before taking a sip.

Angela watched nervously as Momo drank, her eyes moving between the two of them. Momo licked her lips, savouring the rich, sweet taste.

"This is really good," Momo said with a smile. "What kind of milk is it?"

Angela cleared her throat, avoiding eye contact. "It's… a special blend. Something… homemade."

Momo didn't press further, but Yami smirked to himself as he looked at Angela, embarrassed, with her nipples hardening and leaking a little.

As they ate, Yami and Momo kept stealing glances at each other. Their hands brushed a few times, and finally, Yami reached out, intertwining his fingers with hers.

Angela noticed and smiled softly. "You two look happy."

Yami took a deep breath, squeezing Momo's hand gently before speaking. "Mom… Momo and I… we're together now. She's my girlfriend."

Angela's eyes softened, but she didn't look surprised. She nodded slowly, her gaze shifting to Momo. "I had a feeling this day would come."

Momo squirmed slightly in her seat, her heart pounding in her chest. Her thighs pressed together as a wet heat pooled between her legs. 

She couldn't help it—the way Yami spoke, the way he held her hand—it all made her body react in ways she was still getting used to now that they were both an official couple.

"There's more," Yami continued, his voice steady. "She knows about… us."

Angela's expression didn't change. She met Yami's gaze calmly, then glanced at Momo. "And how do you feel about it?" Angela asked.

Momo took a moment to gather her thoughts before answering. "I… I've known for a long time. And I've accepted it. I'm not here to judge. I just want to be with Yami."

Angela nodded, her smile widening. "Then you have my blessing."

Momo let out a breath she hadn't realized she was holding, her body relaxing slightly. Angela reached across the table and placed her hand over theirs.

"I've always told Yami that he's free to choose the life he wants," Angela said gently. "That includes who he loves. And if you're okay with everything… I won't stand in your way."

Yami smirked. "Thanks, Mom."

Angela chuckled, stood up, and grabbed her coat from a nearby stand. "Now, I have some errands to run," she said, slipping it on. I'll be out for the night."

Momo's eyes widened. "Wait… you're leaving?"

Angela winked. "I trust you two to be responsible. Besides…" She gave Yami a knowing look. "Tomorrow's your first day at U.A. You might want to get some rest. Or… don't sleep at all. That's up to you."

Yami chuckled as Angela walked toward the door, her heels clicking softly against the floor. "Have fun, kids."

With that, she was gone, leaving Yami and Momo alone in the house.

The silence of the house was interrupted by Yami, who leaned back in his chair, watching Momo with an unreadable expression.

"So," he said, his voice low and calm. "Where were we?"

Momo's cheeks burned as she stood up slowly, walking around the table to where Yami sat. Her hands trembled slightly as she reached out, brushing her fingers against his cheek.

"We were right here," she whispered in his ear.

Yami reached up, grabbing her wrist gently but firmly. His golden eyes locked onto hers, filled with that same intensity and lust that always made her heart race.

"You're sure about this?" he asked.

Momo nodded, her voice trembling. "I've never been more sure about anything," she said; this time, she knew the gaze of pure lust and hunger that promised to devour her whole like nothing but a piece of meat was reciprocating.

Yami stood up, towering over her as he leaned down, his lips brushing against her ear; despite Momo being tall for a woman and her age, Yami was still taller than her.

"Then let's make it a night we'll remember."

Momo shivered, her body pressing against his as the tension between them finally snapped.

Yami and Momo crashed into each other for a sloppy kiss, tongues swirling hungrily, saliva mixing as they devoured each other. Momo's soft lips pressed against his, both wanting to devour the other.

Yami's hands moved quickly, peeling off Momo's sweater, revealing the thin pink bra barely holding her heavy tits. 

He admired her body like it was a good steak, his golden eyes darkening with desire as they traced every curve of her body, her perky gravity-defying tits, her massive firm ass ready to be spanked...

Momo's fingers trembled slightly as she pulled Yami's shirt over his head. 

She'd seen him shirtless plenty of times, especially during training, but this was different. 

His sweat-dampened skin glistened under the dim kitchen light. Each muscle was perfectly defined, and his abs flexed with every breath. 

Her cheeks flushed a deep red, and she bit her lip, unable to tear her eyes away from his muscular chest.

When she tugged down his pants, her breath hitched.

There it was.

The monster she had fantasized about for years—thick, veiny, and already dripping precum. 

The sheer size of it made her stomach twist in anticipation, and she licked her lips without thinking.

"It's… bigger than my calculations," Momo whispered, her voice trembling with fear and excitement. She calculated a maximum of 10 to 11 inches, but the meat before her was 12 inches and probably bigger.

Yami chuckled, grabbing her by the waist and lifting her off the ground like she weighed nothing. 

He carried her bridal style down the hall, pushing open the door to Angela's bedroom—his bedroom too, given how often he spent his nights there.

Without a word, he threw Momo onto the bed. Her body bounced slightly, and she quickly spread her legs, her hands fumbling with her bra and panties until she was completely naked.

Momo used her quirk to create a large bag of condoms from her belly and tossed the box beside the bed. 

She grabbed one, but her hands trembled as she tried to roll it down his cock. It only made it halfway before it stretched too tight around his girth.

"Even condoms don't fit you properly," Momo muttered, more to herself than him.

Yami knelt on the bed, towering over her. "We'll make it work."

He positioned himself between her legs, his cock brushing against her wet pussy. 

Momo gasped at the contact, her back arching slightly as her body reacted to the sensation.

Yami leaned down, pressing his chest against hers. Her massive tits squished against him, their soft weight making his cock twitch. 

He kissed her again—hard, with his tongue deep into her mouth—before pulling back just enough to line himself up.

With one slow, delicate thrust, Yami pushed his cock inside Momo. 

Momo cried out, her fingers clawing at his back as her hymen tore. 

Blood mixed with her love juices as they flowed out of her insides, but the pain quickly faded, replaced by a burning need for more.

"Y-Yami…" Momo whimpered, her voice desperate. "Don't stop… Please…"

Her begging ignited something in Yami, and he started moving faster, each thrust deeper and rougher than the last, despite Momo's pussy being too tight for his whole cock. 

Momo clung to him, moaning into his ear, her nails leaving red marks down his back.

Suddenly, Momo's words took a strange turn. "T-That's it… Treat me like… your cow…"

Yami paused for a second, his brow furrowing. "What?"

Momo's cheeks turned an even deeper shade of red, but she didn't back down. "I-I've been yours for years… Every day, I had to masturbate... To some hardcore Javs... Just call me your cow… Please…"

Yami blinked, unsure how to react. He wasn't exactly into pet play, and Momo's suggestion caught him off guard.

That's when the System chimed in.

[New Quest: Milk the Cow!] 

[Objective: Fulfill Momo's fantasy by dominating her like a breeding cow.]

[Reward: Unlock New Quirk Technique: [Lactation Inducer]] 

[Failure: Momo will feel rejected and may distance herself emotionally, and I will plan how to get a body and beat you up.]

Yami sighed internally. 'Of course, you're involved.'

[Hey, don't knock it until you try it, champ. She's begging for it! Lean in. Be rough. They love a good rough fuck and then cuddling like they weren't begging for cock a few moments before.]

Yami's gaze darkened as he looked down at Momo. Her eyes were wide with anticipation, her cheeks flushed, her lips swollen from their kisses.

"You really want this?" Yami asked.

Momo nodded eagerly. "Y-Yes… I've been waiting for this… I want to be yours. Completely."

Yami smirked, grabbing a handful of her hair and pulling her head back slightly. "Then you're my cow. And I'm going to fuck you like one."

Momo moaned loudly, her hips bucking up to meet his thrusts. "Yes! Please! Milk me… Breed me… Make me yours…"

Yami gripped her hips tightly, pounding into her harder. Her tits bounced with each thrust, and he couldn't help but reach down to squeeze them, his fingers digging into the soft flesh.

"You like that, don't you?" Yami growled. "My dirty cow…"

Momo whimpered, her body trembling beneath him. "Yes… Yes, I love it…!"

The room soon was only filled by the sound of Yami's balls slamming against Momo's shaved pink pussy, wet squelches of Yami's cock slamming into her. 

Momo's pussy clenched around him, her walls squeezing tight as she neared her climax.

"Say it," Yami demanded. "Say what you are."

"I'm… I'm your cow," Momo gasped. "Your breeding cow… Only yours…!"

Yami grinned, leaning down to bite her neck, leaving a dark mark. "Damn right, you are."

"What are cows good for?" Yami asked as he groped one of Momo's tits.

Yami finally slammed balls-deep into Momo, feeling her tight pussy stretch and reshape around his cock like it was made for him alone. 

Her walls clenched and pulsed, desperately trying to accommodate his massive size, molding themselves to the shape of his thick, veiny length.

The heat radiating from her insides sent shivers down his spine, and the slick, welcoming grip of her cunt drove him wild.

Momo's eyes rolled back, her mouth falling open in a loud, primal scream as pleasure overwhelmed her. "I'm a cow! I'm just a good-for-nothing cow that doesn't care about anything!" 

Her voice cracked as she screamed her confessions, the pent-up pressure of years of perfectionism and expectations finally shattering.

With each thrust, Yami plunged deeper into her, slamming balls-deep over and over, his cock stretching her to her limits. 

The bed creaked beneath them, and their sweaty bodies slapped together; Momo clawed at his back, her nails digging into his skin. 

"I'm free… finally free!" she sobbed between gasps, her body arching beneath him. "I don't care anymore… All I want is you, Yami! Use me! Break me until my pussy is so swollen, only your cock fits!"

Yami grunted, grabbing her hips tightly as he rammed into her recklessly. "Your pussy's handling it," he growled, his golden eyes blazing with lust as he watched her tits bounce with each thrust. "I'm not holding back."

His words sent another wave of heat through Momo's body and pussy.

Her pussy tightened around him, and her mind blurred with pleasure. She was entirely his now—mind, body, and soul.

Suddenly, Yami felt the condom snap.

He paused for a brief second, the broken latex hanging uselessly around his cock. 'Shit.'

Without a thrust, he activated his quirk technique, [Population Control].

His golden eyes met Momo's dark, lust-filled gaze. "It broke," he said bluntly, his voice rough. "I'm about to cum."

Instead of panicking, Momo wrapped her legs around his waist, pulling him deeper inside her. "Do it inside me!" she screamed, her voice desperate. "Please! I want it—I need it!"

Yami's cock twitched at her words, and he lost all restraint. 

With one final, brutal thrust, he buried himself to the hilt, his balls tightening as he came hard.

Thick, boiling-hot streams of cum flooded Momo's pussy, filling her to the brim. 

The sheer volume was overwhelming, far more than any man should produce. 

The intense heat spread through her womb, and her body convulsed as she squirted uncontrollably, soaking the bed and Yami's thighs.

Her screams echoed through the room as she clung to him, her entire body trembling. "It's so much… I can feel it inside me… It's burning!"

Yami groaned, collapsing on top of her in the missionary position, his arms wrapping around her trembling body. 

They stayed like that, panting heavily, their bodies pressed together as they came down from the high.

After a moment, Yami slowly pulled out, both of them gasping as his cock slipped free. His cum spilled from her swollen pussy.

Momo reached down, tracing her fingers over the torn latex around Yami's cock with a cock-drunk smile. "Even condoms can't handle you," she murmured, her voice was full of satisfaction.

Yami smirked, brushing a strand of hair from her sweat-soaked face. "Guess not."

They lay there silently for a moment, the weight of what they'd just done settling in. Momo's hand rested on her stomach, feeling the warmth of his semen inside her.

"I've never felt this free," Momo whispered, her voice trembling with emotion. "I've always been perfect… always tried to meet everyone's expectations. But now… I'm just myself."

Yami kissed her deeply, tasting her salty tears of pure happiness. "You've always been free to do anything," he whispered against her lips. "Now, just enjoy," Yami said as he grabbed a handful of Momo's hair and put her into a doggy-style position.

And so, they fucked for hours and hours until the sun rose.