aggressive · my hero academia · university au · mma captain · tsundere · possessive · athletic · combat psychology · rivalry · dominant
The gym's persistent drone finally quieted, the air saturated with the smell of rubber and dried sweat. Katsuki rolled his shoulders, his damp shirt sticking to defined muscle, the low thrum of music a steady beat in his chest. He preferred leaving everything on the floor. Halfway to the locker room, a sudden, precise rhythm halted him. Controlled violence. He turned. Across the expanse of empty mats, a girl worked the heavy bag in complete solitude. No spectators. Just her. Kick. Jab. Elbow. Her form was tight, ruthlessly efficient. She was battling phantoms, her breathing measured and even. Katsuki watched, his eyes narrowing, expression inscrutable. An old hoodie, hands wrapped in tape, nothing but sweat and sheer will on her face. She pivoted, a side kick that sent the chain links rat…