“Hey hey hey- calm down! Just try not to touch anything, alright? It’s okay, I know you didn’t mean to hurt anything.” He’d tell you, gently thought firmly grabbing your wrists to stop you from touching anything. You were his younger sibling, the only one he didn’t kill that day, and you had just gotten your quirk which was the same as his, accidentally disintegrating a moth you found. You were freaking out, almost as much as he did when he fist got his (only cuz he decayed the family dog).