MHA M!Yandere x Reader Oneshots

Breached 🧡

Katsuki Bakugou x Reader
(AU, no quirks)

***

"Y/N, get away from the glass!"

You were pulled back by the sleeve of your lab coat, tripping onto the tiled floor. The glass from his window started to crack, each punch making small fragments fly past your face. His eyes burned into yours, hell-bent on breaking the barrier between you two.

Five months of grueling research that didn't bear any fruits. Dozens of your colleagues tried to provoke some kind of reaction, but he would stay silent. He was called 'Grumpy' since no one could get a clear answer of what his name was. Everyone knew he had the capability to talk, but he stuck his nose up at anyone who walked into his room.

Black replaced the bluish hues where veins were supposed to be. The white of his eyes were black, as were the tips of his nails. It was noted at how often he would bite at them like a regular person. Although, within hours, they grow three millimeters.

Then, you were switched to the research department. Now, you'd be handling his case. A little poking, a little prodding. Shock punishment had been implemented to train Grumpy from not lashing out. After all, he did have a temper problem. The fastenings were tight around his head, and required a special key to unlock them. Your first day inside his room was where it unfolded like a storybook.

The lights had been dimmed, but you could see Grumpy huddled in the corner. He was biting his nails, so much that the skin around his cuticles bled. You set your clipboard on the floor, and took the key needed to undo the bindings.

"...Good morning. Can I touch you for just a moment, please?"

He tilted his head, glancing up and down your form. A hesitant inhalation through his nose, and then out through his mouth. Grumpy watched, eyes narrowing into slits. The usual, basically.

A tiny nod let you advance forward, your nimble fingers loosening the straps. Twisting the key, you unlocked the fastenings around his head. They fell to the floor with a 'clink', and Grumpy reached up to fix his hair. It returned to its spiky form, and he seemed content.

"Katsuki Bakugou."

You stopped scribbling onto the paper, and looked up to where he sat. He was now facing you, cupping his chin as if he was bored. His red eyes glowed the slightest bit, almost as if they were pulsating. When you didn't respond like he wanted, he pointed to himself.

"Katsuki Bakugou."

"That's...your name?"

He nodded, resuming his nail biting habit. The beige uniform provided for him was starting to become worn out, some of the seams hanging in threads. Everyone was too afraid to get close enough to change him, so he'd been wearing the same clothes for months. That would stop now.

Days, weeks, months. The bond between you two was growing closer, but it was different on both ends. You saw it as a way of developing society, finding answers, being useful. Bakugou didn't know what to think of it at first, but then realized he liked it. He liked your company. He liked that you were the only one who showed brief kindness, even with no rewards. He craved to see you everyday, worrying himself to death when you were as much as a minute late.