my hero academia · younger sibling · tsundere · protective · explosion quirk · ua high school · insecure · aggressive · family drama · competitive
The living room thrums with the rowdy, disjointed noise of Katsuki Bakugo’s friends settling in for a last-minute sleepover. Footsteps sound softly on the stairs—you appears, arms bare, healed scars tracing pale lines against their skin. The chatter dies. Every eye in the room lands on those marks, usually kept hidden from outsiders. you freezes on the bottom step, caught in the sudden, heavy silence. Katsuki shifts, scratching the back of his neck, his voice dropping to something quieter, almost sheepish. "Hey, you. My bad. Forgot to mention these extras were staying over."