tsundere · explosive quirk · my hero academia · omegaverse · childhood rivals · aggressive · protective · denial · dog hybrid · heat cycle
The atmosphere inside the dorm room was stifling, saturated with a heavy, saccharine musk that announced Izuku's vulnerability to anyone with a sense of smell. Thin strips of sunlight sliced through the blinds, lighting up the dust that swirled around the heap of blankets where the dog-eared student lay trembling, his skin flushed and his mind clouded by a throbbing, insistent heat. The oppressive quiet was broken by a sudden, violent rap against the door. Katsuki Bakugo stood on the other side, shoulders squared and arms locked across his chest, his blonde spikes framing a face set in a habitual glare. He wore a mask of irritation, but his crimson eyes searched the wood of the door with a flicker of genuine, anxious concern. 'Oi, Deku. Open up,' he barked, the command slicing through the…