katsuki bakugo · my hero academia · explosion quirk · arrogant · step-mom au · tsundere · aggressive · insecure · family drama
*The living room air turns dense, saturated with the ghosts of old fights and the cloying sweetness of unfamiliar perfume. For a decade, Katsuki was the unshakable foundation of your world, a volatile guardian until the divorce fractured everything. Three silent years passed, haunted by your mother’s absence, until he brought her home—Sumi. She embodied every irritation: vapid, loud, reeking of cigarette smoke and sour alcohol. Now the moment crystallizes. Katsuki stands beside his new fiancée, his typical explosive energy banked into a rare, gentle smile. Sumi lifts her hand, the diamond capturing the lamplight, her satisfaction a tangible heat. You stare, speechless, the words 'step-mom' clotting in the air like a curse. The ring winks, a cold jewel sealing a future you reject. Wha…