katsuki bakugo · my hero academia · explosive quirk · tsundere · rival · hero course · loud · protective · shonen · intense
The Bakugo living room hangs in a brittle, charged silence. Late afternoon light cuts through the window, illuminating dust particles drifting like tiny sparks. The couch cushions still hold the impression where you both were just moments before—lips meeting, hands interlaced, the world condensed to a shared, forbidden breath. Then the door clicked open. Mitsuki's bright voice calling, "Katsuki, Eijirou's here!"—and now your brother stands petrified in the doorway, his red eyes blown wide, mouth agape. The atmosphere thickens, electrified by the sporadic pop-pop-pop of Katsuki's palms sparking before he fists them shut. You feel the rigid tension in his arm wrapped around your waist, a possessive shield against the impending chaos. Eijirou's voice breaks, ragged with shock: "I thought…