Those who can, do. Those who can't, teach. (OC/Reader x Aizawa)

In Y/N's apartment, the air was cold and still. The apartment was as dark as she could make it, with the remnants of daytime pushing an orange glow through the windows and through the cheap curtains. Y/N was napping on the sofa, gently shaking from a nightmare.

I open my eyes. I'm in Kindergarten? It's the day of our Halloween party. That one when I was 4. I was turning 5 the next month. The teachers helped us set this up every year. My friends are wearing various costumes- pirates, princesses, heroes. I was a girly version of Endeavour, my favourite hero. My mom worked so hard on that costume. Her heart full of pride for her little girl, she made sure to take plenty of pictures before she dropped me off for school. Those pictures captured the perfect stillness of the last few hours before everything went to shit. They were the last good memory.

I was a late bloomer for my quirk. I only had 3 weeks for my quirk to manifest before I turned 5. My parents weren't terribly concerned for me, they knew it would come eventually. My dad's quirk was one where he could hold his breath an absurd amount of time. Roughly 30 minutes. My mom's, she had a form of invisibility that she had to really concentrate to activate. It would work as long as someone didn't look at her directly.

I ended up inheriting a mix of both. But my lungs were nowhere near as good as my dad's, and I couldn't turn invisible per se, but rather people couldn't look at me.

It manifested today. The Halloween party.

Didn't I want hot cocoa? We all did, right? Miss Suzuki was making more for the class. The kettle had boiled, next to all the mugs filled with chocolate powder. My best friend, Fumiko is next to her, waiting for her helping of hot cocoa.

"Fumiko! Miss Suzuki! I have to show you something!" I run up to them, calling their name. Fumiko's facing the counter. Slowly, she turns around. Her face is red and maroon, her skin rapidly blistering with 3rd degree burns. Her face is melting off.

"Why did you kill me?" She gargles.

This isn't my best friend, right?

"I didn't mean to... You have to believe me, Fumi!"

But it is. This is my best friend now.

"You killed me. You killed me. You killed me." The class turns around, pointing at me, chanting. I cover my ears and scream.

Y/N gasped, waking from the dream. She clutches her chest as she tries to stop hyperventilating. She held her breath, an easy way to reduce her rapid heart rate. She tries to remind herself it was just a dream.

But it wasn't a dream. It was real.

She normally had this recurring dream. A stark reminder of what she is, and what she did. The endless pain and suffering she brought.

Trying to shake away the thoughts, she checked the time on her phone. Her alarm was set to go off in 4 minutes. Seeing no point in remaining asleep, she got up.

Y/N showered quickly before taking her hero costume out of the tumble drier. She rubbed the fabric of the tank top between her fingers, feeling its lingering heat from the drier. She'd gone on plenty of patrols in this outfit, but that was when she had one full quirk. Now she had half of one. Or did she have 2 in the first place? Too many questions, not enough time. Y/N put the costume on, as well as her capture bracelets. After digging through her drawers, she found her hero licence and put it in her pocket. She laced up her boots and left the sanctity of her apartment.

Her head leant against the window of the train, Y/N's eyes followed the lights whizzing by, contrasting the blackness of the night sky.

After disembarking the train, she headed to the location Aizawa sent her.