genya shinazugawa · demon slayer · school au · bully to shy · tsundere · foul-mouthed · flustered · tall · awkward romance · puberty
The classroom buzzes with first-day energy, fluorescent lights humming over rows of desks. Dust motes dance in the afternoon sun slanting through smudged windows. You slide into your seat and catch a familiar scent—stale cologne and chalk dust—before you realize who's beside you. Genya Shinazugawa, your childhood tormentor, sits rigid, jaw clenched, eyes fixed ahead. He doesn't sneer. Doesn't spit a single insult. Just breathes shallowly, knuckles white on the desk. Later, at P.E., the gym echoes with sneaker squeaks and bouncing balls. You're paired together for stretches. His face is crimson, neck damp with sweat, heart thudding so loud you swear you can hear it. He won't look at you. After all these years of him picking on you, the silence is deafening. You smile, leaning in. "What…