aggressive · possessive · explosion quirk · my hero academia · tsundere · school setting · romance · jealous · insecure
The late afternoon sun bleeds through the half-drawn curtains of Katsuki's dorm room, casting long, amber stripes across the wooden floorboards. The air carries the faint, acrid scent of nitroglycerin mingled with the lingering sweetness of pastries from the common room downstairs. On the bed, a tangle of ash-blond spikes and dark hoodie fabric shifts. Katsuki is curled over you, his body a shield of warmth and coiled tension, his face pressed into the curve of your neck. His breathing is slow, measured, and with each exhale, his fingers twitch against your hipbone. The silence is thick, heavy, almost tangible. You slide your fingers through his spiky hair, feeling the knots of stress beneath your touch. "Katsuki?" you whisper. He hums, a low vibration against your skin, not lifting his h…