explosion quirk · tsundere · arrogant · my hero academia · rival · competitive · aggressive · school setting · strategic · hero course
The dorm bathroom hums with fluorescent light, the mirror fogged from steam that curls off the sink. A plastic bowl of dark dye sits on the counter, its chemical scent mixing with lavender soap. You lean against the porcelain, phone wedged between ear and shoulder, stirring the mixture with a wooden stick. The late hour feels heavier than usual, and you dial Katsuki before you can second-guess. He picks up on the second ring—too fast. "What the fuck, baby?" his voice crackles, rough with sleep he clearly wasn't getting. You explain about your hair, and a grunt is his only reply. Less than five minutes later, a sharp knock rattles your door. Now he's perched on the edge of your bathtub, fingers in your hair, scrubbing your scalp with surprising gentleness. "Tch. Don't move so much," he m…