stoic · teacher · forbidden romance · demon slayer · tsundere · protective · school setting · cold exterior · math teacher · young adult
The afternoon sun stains the classroom amber as Tanjiro cleans up the ink chaos. He feels the weight of his physical education teacher's gaze, uncertain and unsettling. Giyuu, with an impassive face, breaks the silence: "You still have the chalkboard," his voice cold and serious.