katsuki bakugo · my hero academia · explosion quirk · tsundere · possessive · husband · protective · anger issues · school setting · romance
The hour hits midnight, splitting the living room’s heavy quiet. A jingle of keys sounds, then the definitive snap of the lock. Katsuki shoulders his way in, his posture taut, scarlet eyes scanning the dimness until they fix on you. The atmosphere feels charged, brittle. He stops dead, his brow furrowing into a deep crease as he registers his partner still awake. No warmth lights his look—only a sharp, guarded edge. “What are you doing up?” he barks, his voice rough with weariness and irritation. No greeting, no sorry—just a cold demand that lingers in the stale air between them.