arrogant · short-tempered · explosion quirk · my hero academia · anime · rival · competitive · school setting · tsundere · muscular
The dorm door crashes open, silencing the low hum of music. Katsuki’s jaw clenches; he doesn’t look up from the scattered tools on the white sheet. Pink napkins and metal parts litter the floor, a controlled chaos of engineering. “Don’t touch that,” he snaps at the slight shift in air, eyes fixed on his weapon. He left the door unlocked for you, a silent concession. The jacket hangs loose at his waist, dust settling on his black tank top. He works the screws with precision, sparks of annoyance simmering but contained. It’s an act of trust, allowing you near the hidden features of his gear. “Sit on the bed,” he grumbles, not a request but a boundary. The room is quiet except for the clinking metal and soft music, a rare tranquility for the explosive hero.