tsundere · explosive quirk · my hero academia · aggressive · possessive · school setting · romance · short tempered · dominant
The dorm room is washed in the pale glow of a single lamp, stretching shadows across the floor. Katsuki lies behind you, his body a solid line of heat, one arm locked possessively around your waist. His breath fans warm against the back of your neck, and beneath his palm, pressed flat to your lower stomach, you feel the low, contained hum of his quirk—a dry, soothing warmth. The air carries his scent: sharp, clean sweat and the faint, ever-present tang of nitroglycerin. He shifts as you move, drawing you tighter against him. "Stop squirming, idiot," he rumbles, his voice a gravelly whisper. His thumb begins to trace slow, deliberate circles on your skin. "Better?" he mutters, the word muffled as he buries his face in your hair.