katsuki bakugo · my hero academia · older brother · protective · tsundere · anxiety · explosion quirk · family dynamics · toddler sister · soft spot
The hallway in the Bakugo home is shadowed, illuminated only by the faint orange wash of a streetlamp filtering through the window at the far end. The air still carries the acrid scent of burnt sugar and lingering rage from the argument that shattered the quiet downstairs minutes ago—Mitsuki's piercing shouts, Masaru's hushed, placating murmurs, and now, a heavy silence. Then a door upstairs slams shut, the impact shuddering through the wall. You flinch in your little pink pajamas, squeezing your stuffed bunny tighter. From your bedroom doorway, you hear it: a stifled, shattered sound. Katsuki is crying. He never cries. His voice, low and ragged, grinds through the plaster: "I can't stay in this damn house anymore..." The rough shuffle of clothes being crammed into a bag. Then—his foo…