My Harem System In My Hero Academia

The coffee shop "C.J.'s Bean" was tranquil for a Friday afternoon. The buzz of chattering students and busy baristas was replaced by a peaceful hum; the soft clinks of porcelain cups and the scent of freshly brewed coffee filled the air. 

Yami sat across from Momo, idly stirring his iced latte with a spoon—even though he wanted a Soda-Cola, but Momo convinced him otherwise—while she sipped her green tea while staring at his face. It was weird, but Yami had grown accustomed to Momo's mannerisms.

"I still can't believe how fast middle school flew by," Momo said, setting her cup down. "It feels like we were stuck in that stuffy classroom yesterday."

Yami smirked, leaning back in his chair. "Yeah, time flies when you're constantly kicking ass in every subject."

Momo laughed, brushing a strand of hair behind her ear. "Not every subject. I was first in everything, thank you very much."

Yami rolled his eyes playfully. "Yeah, yeah. Congrats on your perfect academic record and that U.A. recommendation."

Momo's chest swelled with pride. "Well, that's very humble of you", Momo coughed, "but yes, the recommendation does mean I don't have to do the regular entrance exam. Just some light trials and an interview." She paused, tilting her head. "What about you? You're taking the entrance exam, right?".

"Yeah," Yami said casually, sipping his drink. "Didn't feel like jumping through the hoops for a recommendation. Besides, I barely put effort into school and still got second in everything."

Momo gave him a look—half amused, half sceptical. "Barely put any effort? Come on, Yami. We both know that's not true. You were always just as studious as me. You just didn't show it off."

Yami shrugged, a sly grin tugging at the corner of his mouth. "Maybe. But academics aren't really my thing."

Momo couldn't argue with that. Yet. Yami was a monster when it came to anything physical. Whether it was kendo, fencing, or even track and field, he always managed to outpace her. No matter how hard she trained, there was always a skill gap she couldn't quite close.

"Speaking of," Momo said, resting her chin on her hand, "are you planning to join any clubs at U.A.?"

"Maybe," Yami replied. "Depends on how boring the classes are. If I need something to keep me awake, I'll join a club."

They finished their lunch in comfortable silence. When Momo called for a limousine, Yami raised an eyebrow. "Still getting chauffeured everywhere?"

Momo smiled. "It's efficient."

They hopped into the sleek, black limousine. As the limousine pulled away from the coffee shop and merged into traffic, Yami leaned against the window, watching the city blur past. His mind wandered.

Sixteen.

He was sixteen now, older than he ever was in his past life. In just a few months, he'd be seventeen. 

The thought felt surreal. His memories of his former life had grown hazy over the years. Still, the bitterness remained—an orphan, a tragic accident, a life cut short before it had even begun.

Now, though? He was alive. Thriving. And he had power over his own fate.

Yami opened his status window, the familiar glowing text appearing before his eyes.

==Harem System 1.2.16.2==

Name: Yami Iwatani

Age: 16

Quirk: Pillar Man (S-)

Mastery: E+ (Getting there, slowpoke.)

Strength: C (Stronger than most, but not a beast. Yet.)

Durability: C+ (Tougher than nails. Probably tougher than steel.)

Agility: D (Still gotta work on those reflexes.)

Stamina: B+ (Endurance is your strong suit. You can go all night, all day, all week—let's go!).

Intelligence: B (Smart enough to get yourself in and out of trouble.)

Skill: C- (Improving, but don't get cocky.)

Harem: 1.5 (Still waiting for Fat Tits to commit.)

Lust: 50% (You're still a horny bastard, but you're keeping it in check.)

====

Yami smirked, closing the window. The system had been quiet lately, letting him focus on real-world goals. But he knew it wouldn't stay dormant for long.

"Hey, Yami?" Momo's voice pulled him from his thoughts.

"Yeah?"

She hesitated for a moment, then smiled. "Thanks for coming with me today. I know the entrance exam isn't a big deal for you, but it's nice to have someone to share this with."

Yami leaned back, stretching his arms across the back of the seat. "No problem. You're stuck with me whether you like it or not."

Momo laughed softly, her cheeks turning a faint pink. "Good. I wouldn't have it any other way."

The limousine pulled up to the U.A. High School entrance examination site. The building was tall and imposing, its gates wide open to welcome aspiring students who flocked into the entrance.

Yami stepped out first, stretching his legs before turning to offer Momo a hand. She took it, her grip firm and confident, and stepped beside him.

"Well, see you after," Yami said as he walked into the entrance while Momo looked for the special examination site.

Yami pulled out his phone and checked the time. He still had some time to kill before the exam officially started, so he decided to screw it—he'd grab a quick nap. 

Spotting a bench nearby, he walked over, stretched out, and got comfortable. Just as he was about to close his eyes, he heard loud shouting from the entrance gates.

"Move aside, Deku!"

The voice was rough and aggressive, coming from a blonde guy with wild, spiky hair. 

Yami squinted in that direction, opening one eye. The guy yelled at some kid with messy green hair who looked like he was about to apologize just for existing.

"Kacchan!" the green-haired kid stammered, clearly recognizing the loudmouth.

Yami groaned. 'Why does every place have at least one asshole like this?' 

He sat up, running a hand through his messy black hair. 

Back in middle school, he'd been the guy who kept bullies in check. Not because he cared about the victims that much but because he hated people who thought they were untouchable, just like his father. 

He'd single-handedly reduced bullying by half, either through intimidation or by putting guys like this in their place.

If there were two things Yami liked in a fight, it was a good fight and a deserved fight.

Stretching his arms over his head, Yami casually walked toward the commotion. The blonde—who Yami was pretty sure was Bakugo Katsuki—was still going off, his voice loud and obnoxious.

"Get out of my way, or your—"

Before Bakugo could finish his threat, Yami was already behind him. His hand landed firmly on Bakugo's shoulder, making the explosive blonde freeze mid-sentence.

"Got a problem?" Yami asked, his deep, carrying enough weight to make it clear he wasn't messing around.

At sixteen, Yami stood at 185 cm (a solid six feet), with a lean, muscular build that made him look like he'd stepped out of a pro athlete's training camp. 

His golden eyes locked onto Bakugo's red ones, and the air grew tense for a moment.

Bakugo yanked his shoulder away, scoffing as he turned and stormed off without another word. 

Yami watched him leave before shifting his gaze to the green-haired kid—Midoriya, if he remembered right. The guy looked like a kicked puppy, clutching his notebook like a lifeline.

Yami walked up to him, sighing. "Grow some balls," he said bluntly, then turned on his heel and walked away, leaving Midoriya wide-eyed and speechless.

As Yami made his way toward the exam hall, he barely paid attention to the other students around him. Most of them were just faces in the crowd—nervous kids hoping to get into the best hero school in the country. 

Same goal, same nerves, nothing special.

Then something caught his eye.

Midoriya went flying past him—literally. The guy tripped over his own feet and would've face-planted on the pavement if not for a girl stepping in. 

She pressed her fingertips in Midoriya's back, activating her quirk just in time to stop him from smashing his head on the ground.

The girl was short, with a curvy figure, fair skin, and a warm, round face that made her look approachable. Her auburn hair was tied into a short ponytail, and her eyes matched her hair colour perfectly.

"Are you okay?" she asked, offering Midoriya a hand with a bright smile.

Midoriya took her hand, stammering out something incoherent. Yami, still watching from a distance, smirked a little. 'Guy needs to pull himself together.'

He kept walking toward the exam hall, but his mind lingered on the girl. 

Then, right on cue, his system decided to wake up after being quiet for weeks.

[Hey, Yami! Miss me?]

Yami rolled his eyes. 'Of course, I think about a girl, and you pop out.'

[Don't act like you're not happy to see me!]

[Anyway, let's get down to business. The main story is about to start, which means...]

[New mission time!]

The system window popped up in front of him, displaying the details in glowing text.

====

Mission: Help Ochaco!

Objective: Introduce yourself to Ochaco Uraraka and make a strong first impression. 

Time: 24 hours. 

Reward: +1 Skill Rank. 

Bonus: You'll receive an additional reward if you get her number! 

Penalty: None (But seriously, don't screw this up, she got a fat ass I want to see bouncing, best of luck, champs.)

====

Yami stared at the mission details for a moment, considering his options. Introduce myself and get her number? Easy enough. Does the system really think I'm that socially awkward?

[Oh, don't act cocky, Yami. She's not gonna be impressed by your usual "tough guy" routine. You're gonna have to charm her.]

'Charm her? I'm not trying to marry her, system. It's a damn number.'

[Yeah, yeah. Shut up, you are not going to marry "Her". You are going to marry "Them" now go and get her number; by the way, wanna know what Momo is doing rn?.]

Yami sighed, 'What is she doing?'

[She is masturbating in the bathroom thinking about you~]

'Fuck off'

Yami closed the mission window with a swipe of his hand, shoving his hands into his pockets as he walked. 

He saw that neither Ochaco nor Midoriya was by the entrance, so Yami just resigned and walked into the hall to take the test; he still had a day, regardless.

=====

Remember to comment any questions! I'll try to respond them next chapter.