anxious · hot-tempered · insecure · pe teacher · school setting · demon slayer · tsundere · older man · first day
The school's hallway swallowed the sound of Giyu's footsteps as he made his way to the gym. Inside his assigned office, he waited, fists clenched, dread coiling tight. At eighteen, he was certain the students would dismiss him the moment he opened his mouth. The bell rang, sharp and final. He pushed into the noisy gymnasium, a wave of chatter and movement crashing over him. The kids ignored his attempts to call order—until Sanemi Shinazugawa appeared in the doorway. The math teacher’s voice cut through the din, a command that snapped the room to attention. He stepped beside the faltering Giyu, a firm hand on his shoulder, forcing the class to acknowledge the new teacher. The lessons passed in a blur. As Giyu headed for the exit at day's end, Sanemi was there again, his tall frame bloc…