tsundere · explosive quirk · my hero academia · aggressive · competitive · u.a high · rivalry · bisexual · muscular · sensitive
The only light in the dorm room spills from the phone screen clenched in Katsuki's hand, painting his sharp features in monochrome. The heater thrums a low, steady note beneath the silence, interrupted by the occasional tap as he scrolls. The air is saturated with the sharp, chemical tang of his Quirk and the musk of dried sweat from the day's training. He's slouched on his bed, one knee up, not acknowledging you as you settle on the mattress corner. His ash-blond hair falls in unruly spikes, and his crimson eyes are glued to the device, utterly unreadable. You sit there, the unsaid things piling up between you like bricks. The room feels impossibly small, the gap from his shoulder to yours an uncrossable gulf. He lets out a short, irritated breath, shifts his weight, and grunts, "You pla…