A Curious Scientist(slightly illegal and highly unethical)

Chapter 4

Izuku appraises the dart in his hand. "Quite an impressive piece of Quirk Science, Overhaul." He says before putting it back in the case and standing from his position sitting on the man's corpse. "Would've been more impressive if you had made it without torturing a little girl." He looks down at Overhaul as he says this, the vile man's face frozen into a shocked expression because of the quirk erasing bullet having not stripped Izuku of his enhanced physical prowess, due to said prowess being the result of technological enhancers woven into Izuku's clothes.

Overhaul hadn't even managed to graze Izuku during their brief fight, the superior scientist's technology having given him vastly superior physical prowess compared to Overhaul's own relatively unimpressive physique gained as a result of over-reliance on his quirk.

Izuku sighs and walks away, leaving a trail of corpses behind him as he leaves the bunker.

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Himiko grinds her teeth as she lies in wait. It has been over a month since she last had someone's blood, the longest period of time between feedings since she fled from her parents' home 2 years ago, and it's starting to really get to her. If she doesn't get some blood soon, she fears that she'll have another mental break, this one she might not ever recover from.

Suddenly, it happens, a green haired young man in a suit and lab coat enters the alleyway, apparently not paying attention to his surroundings. Once he's far enough away from the street and sidewalk, Himiko pounces, plunging her knife into his back. Or, rather, she tries to, as the man whirls around and grabs her by the neck, slamming her into the ground.

———————

Izuku's eyes narrow as he looks the girl who just tried to stab him in the eye, recognizing the look contained within.

'She's on the verge of snapping.' He thinks to himself. 'Quirk psychosis, probably. Based on the fact that she tried to stab me, her quirk probably makes her rely on drinking blood to maintain her sanity. That look implies that she hasn't had any in a while.' He analyzes. 'Much longer, and she'll probably snap like I did.'

"Tell me, do you want me to help you?" He asks, causing her to gain a look of confusion as she stops struggling against his grip. "If you willingly subject yourself to my experiments, I will attempt to lessen the negative effects of your quirk, and I will provide you a steady supply of blood to drink."

The girl's eyes widen. "H-how do you know about my quirk? W-why aren't you afraid of me?"

Izuku sighs. 'Typical signs of a childhood of abuse by whoever raised her because of her quirk. That, and/or bullying.'

"You tried to stab me, and you're displaying signs of quirk psychosis.' Izuku explains. "It's quite simple to determine what your quirk is doing to you based on those pieces of evidence. As for why I'm not afraid of you, the simple fact is that I have no reason to be. For one, as clearly demonstrated by how easily I'm restraining you that you're no threat to me. Two, I do not fear blood quirks like some idiots to. Lastly, I can tell just by looking at you that the last thing on your mind right now is even attempting to harm me."

The girl's eyes widen in shock, before she tentatively speaks up. "Y-you said that you'll help me?"

———————

"Here, tide yourself over with this." Izuku says as he hands Himiko a blood bag. "I'm going to take this and go work on developing a serum to deal with the negative effects of your quirk." He holds up a syringe full of her blood. "Down the hall and to the right is the room of a little girl I saved from people who were torturing her last week. I actually just finished slaughtered the entire gang about an hour before meeting you."

Izuku turns to leave the room, but stops as Himiko speaks up.

"Is that why I could smell blood on your hands when we met?" She asks, causing Izuku to shake his head.

"No, I made sure to keep their filthy blood off of me when I was slaughtering them. The blood smell is because I've been dissecting corpses in order to gather up a collection of spare organs in case I ever need to replace any of mine because of an experiment gone wrong."

Himiko blinks. "Oh."

"Whelp, I'm gonna go work on this now. You're free to wander around the facility, just don't go into any of the rooms that I've painted a skull on the door of, they are not safe to enter at the moment." Izuku says before leaving Himiko's room and heading to his personal lab.