Iwaizumi is a superhero, you're a villain, and the two of you are roommates but are completely unaware of each other's secret identities!
Requested by @Hysterical_Eternity
A/n: lord help me bc I love iwa chan and sometimes I just can't control myself...
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"What the hell happened to you this time? You look like you were dragged halfway across the city."

"Same goes for you!"

Your roommate let out a long sigh as he walked over to the freezer in the kitchen and grabbed a few ice packs before wrapping them up with towels. You watched him as he walked over to the couch where you were sitting and offered you a couple of ice packs. You murmured your thanks under your breath as you stuck the ice packs on your bruised shoulder and knee.

"I fell down the stairs at work... What's your excuse?" you asked and raised an eyebrow at him. You leaned back against the couch and let your head rest against the soft cushions.

"I was helping a friend move into his house and he let go of a couch that he was taking up the stairs before I was expecting him to. That obviously didn't end well for me," Iwaizumi grumbled as he placed an ice pack on his head and his torso.

"Aww, those muscles of yours couldn't stop the couch before it hit you?" you cooed mockingly as you squeezed his toned arm. You winked at him and giggled, even when he swatted your hand away.

"And that overinflated head of yours couldn't break your fall? What a shame..." he retorted bitterly.

"I would kick you but I'm too sore."

Iwaizumi simply scoffed and turned his attention to the television, which had been playing a random show.

About half an hour later, you fell fast asleep on the couch, curled up with your back facing Iwaizumi. He noticed that you were asleep, and checked the clock. Upon realizing how late it was, he took the ice packs off his body and plucked the ones lying on your body off of you before putting them in the freezer. He then approached your sleeping form and picked you up, carrying you into your room and setting you down in your bed.

Looking down at you, he gently brushed a strand of hair away from your face before pulling the covers of the bed up over you and leaving your room, closing the door behind him. He then went off to his own room and got into bed, staring at the ceiling for a long time before finally falling asleep himself.

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The next evening, you stood in the attic of an abandoned townhouse—your hideout. You looked over your map of the city and at the places you'd marked in red ink as you restricted your (h/l) (h/c) hair by putting it into a black mask that you wore as part of your outfit. Even though the tight suit served to prevent anything from catching on hooks, wires, or lasers, you couldn't deny that it made your figure look very attractive.

Once you'd gone over your plan in your mind, you set out to execute it, making your way to the nearest museum. You'd seen the owner of the museum stow quite a lot of money away in that hidden safe in his office, and you wanted some.

"I'm sure that man would be willing to loan a bit of money to a former college student who's still trying to pay off debt and who is living with her best friend whom she actually loves but is too scared to tell because she's actually a thief—and a pretty damn good one at that," you hummed to yourself softly as you used your grappling hook to swing from building to building through the darkness of the night.

When you saw the museum a few feet away, you stopped and walked closer to the edge on the rooftop you were standing on. As much as you didn't want to be a thief, you seemed to have a knack for stealing things from right under people's noses, so you were going to use it. "If anything, I hope he views this money loss as a sort of forceful donation to a good cause. Besides, it's not like I steal from the poor! These people have more money than they can spend!"

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As Iwaizumi was making his evening rounds, on the hunt for lives in danger, he spotted a figure standing on a roof. Out of curiosity, he climbed to the top of the building only to see a young woman dressed in a tight black suit fiddling with the top of her outfit. It looked to him like you were touching yourself, and he blushed slightly before clearing his throat.

"Excuse me," he spoke, his voice flat and low.

"You're excused," was your simple response. You zipped up the top of your outfit again once you'd finished stuffing the last of the cash into the inside of your suit. You'd forgotten something to carry your loot in so you had to do what you had to do.

There was a long silence as you turned to look at him, your (e/c) eyes glinting mischievously. You'd had run ins with quite a few superheroes, but you'd never seen this man before. He was probably as lame as the rest.

"By that flashy get up of yours I'm guessing you must be a self-proclaimed hero," you suggested mockingly with a smirk, "How cute."

"And by that attitude of yours I can tell that you're a self-centered and egotistical villain," he retorted calmly despite the fact that his nostrils had flared at your statement.

"Wow, you're so smart!" you gasped with a smile. Your face quickly fell into a scowl, however, and you rolled your eyes. "Listen, I don't know what you want me for, but I'm not sticking around to find out. I'm gonna leave, but you should get home. It's probably past your bedtime."

With that, you turned around and pulled out your grappling hook, but his hand stopped you. He snatched the device out of your hand and threw it across to the other side of the rooftop. You glared at him, and his own eyes glared back from behind his mask.

"You can cough up what you've just stolen now, or we can do this the hard way," Iwaizumi offered, losing his patience with you.

"I don't like to play nice," you stated angrily.

You then pressed a button on your suit that triggered a set of razor sharp, metal claws to shoot out of the fingers of your gloves before flinging yourself at Iwaizumi and attacking him mercilessly. You clung onto him and scratched him viciously as he struggled to fight you off.

You felt his crushing grip around your waist as he tried to yank you off of him but to no avail. He grunted when you stuck your claws into his shoulders, tugging them through his skin. He eventually managed to push you away from him, but the two of you continued to fight until Iwaizumi finally got the chance to really show off his power.

Once you'd pissed him off enough with your attacks that seemed to come from nowhere, his hands found your waist, and he grabbed you when you jumped onto his back and threw you down onto the rooftop with such force that the stone cracked. You let out a cry of pain as darkness started to creep into the corners of your vision. That had really really hurt.

Seeing that you were defeated, he kneeled down next to you and looked at you. When he tried to take off your mask, though, you found the strength to pounce on him again and attack him a few more times. You directed a stab at his neck, but he grabbed your hand, causing you to look up into his eyes.

There was a long silence as your body started to feel weaker and weaker. You recognized those eyes and the way they burned with both passion and rage. The voice and the attitude went perfectly with those eyes now.

"Haji... me..."

Your body went completely limp as you fell unconscious, and Iwaizumi found himself at a loss for words. Once he'd realized who you were, he hung his head in sorrow. "(F/n)... Dammit!"

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Iwaizumi sighed as he sat down on your bed next to you, gently stroking your cheek and making sure that the ice packs on your back were in the right spots. The stacks of money that he'd painstakingly pulled out of your suit were sitting on the bedside table. He wasn't going to tell you about how he'd gotten those out, since he definitely hadn't been able to avoid touching areas he knew were off limits. He was secretly amazed by how much money you'd managed to fit inside of your suit.

He was trying to cope with the situation. You had each exposed each other's secret identities. What now?

You stirred next to him, and he watched you expectantly. Without wasting another second, your eyes began to tear up and you apologized, saying, "I'm sorry, Hajime. I'm sorry I'm evil." At this point, you were crying both tears of shame and of pain.

He pushed a few locks of your hair away from your face. "Don't apologize, (f/n). Go back to sleep," he ordered, his voice weak and strained. The gashes on his shoulders stung like hell.

"But Hajime—"

He shushed you by pressing his lips against yours. "Don't worry for now. Just go back to sleep," he whispered as he held your face in his hands. You watched him groggily for a few moments before obeying.

You moved your weak body closer to his with his help and rested your head on his stomach. That was as far as you moved before you passed out again, and Iwaizumi gently held you closely to him in his arms, being careful not to hurt you.

As shocked as he was by the discovery of your evil, he couldn't be as angry with you as he should've been. He loved you, and he couldn't deny it.