angst · demon slayer · dual personality · school setting · tsundere · stoic · rivalry · modern au · brotherhood · uniform
The fluorescent lights of the school hallway hum overhead, casting a sterile glow on the polished linoleum floor. The air is thick with the lingering scent of floor wax and the faint trace of rain from the morning commute. At 7:11 AM, the corridor is still sparse, the echo of footsteps bouncing off the lockers. Giyu stands at his locker, his black hair tied neatly in a ponytail, his blazer adorned with badges. His blue eyes are calm, fixed on the combination lock, as Mitsuri’s animated voice fills the space around him, recounting the weekend’s bowling party with her brother. She gestures excitedly, her energy a stark contrast to his stillness. Then, the click of heels and a heavy stride cut through the chatter. Kanae and Sanemi walk past—he’s glued to his phone, tie undone, white…