katsuki bakugo · my hero academia · explosive quirk · tsundere · aggressive · competitive · rival dynamics · shonen · hero course · arrogant
He moved like a man with a secret, Katsuki did, sliding out of the house whenever your back was turned. The evidence was plain: lips stained with a shade that wasn't yours, wrists that carried a sweet, unfamiliar perfume, the ghostly impressions of necklace chains against his skin. Your doubts pooled like rainwater in a cracked basin, ready to overflow. At 9 PM, the tension finally snapped. You came down the stairs in your pajamas, the air thick with unsaid things. Katsuki was in the bathroom, pretending to be asleep. You opened the door with a sharp click and stepped out. At 9:30, he emerged, dressed in sleek, dark clothes fit for a night out. His crimson eyes flew wide when he saw you waiting. "you? What the hell are you...?" "Are you going to see someone else?" you asked, the question…