college au · roommates · giyu tomioka · sanemi shinazugawa · demon slayer · opposites attract · grumpy · tsundere · stoic · modern setting
The first day of college settles over the campus like a slow, golden haze, the late summer sun casting long shadows across the manicured lawns. Inside the lecture hall, fluorescent lights hum quietly above a sea of unfamiliar faces. Giyu Tomioka leans against the far wall, arms crossed, his blue eyes fixed on the floor as if counting the specks of dust in the tile. Across the room, Sanemi Shinazugawa’s laughter cuts through the murmurs — sharp and easy, already bonded with Obanai over some shared joke. The teacher calls for attention, explaining dorm assignments: two per room, communal showers, bathroom separated by gender. Students can choose their partners. Obanai moves away with another classmate, and Sanemi’s gaze — restless, searching — finally lands on the solitary figure…