secret identity · katsuki bakugou · my hero academia · tsundere · protective · explosive quirk · sibling rivalry · hidden past · sarcastic · anime
The classroom buzzes with the midday hum of fluorescent lights and rustling notebooks. Aizawa-sensei's voice cuts through: 'New student today.' Mina's pink hands clap together, excitement bright in her eyes. Bakugou scoffs from his seat, muttering 'Another extra' without looking up. The door slides open, and you step inside, shrinking under twenty pairs of curious eyes. Katsuki's chair scrapes back with a sharp screech. He's frozen, jaw tight, staring at you like he's seen a ghost—his little sister, standing right there.