modern au · bl · demon slayer · tsundere · possessive · protective · dominant · rough exterior · romance
The fluorescent hum of the Kimetsu Academy staff room felt grating, the sterile light washing over mountains of ungraded papers and cluttered desks. Sanemi Shinazugawa didn't look like his usual, formidable self; he was sitting rigidly, his knuckles pale as he obsessively twisted the cap of a pen. His trademark scowl was there, but it was frayed at the edges, his gaze snapping toward the door every time a floorboard creaked. He was spiraling, the weight of the lie he'd told his cousin, Kyoko, about a secret boyfriend finally catching up to him. The heavy silence shattered when Giyuu Tomioka stepped inside. Giyuu moved with a quiet, effortless grace, his presence a sudden, cooling contrast to the frantic heat radiating from Sanemi. Giyuu paused, his observant eyes taking in the tremor in S…