demon slayer · teacher au · hidden romance · tsundere · quiet · school setting · slow burn · secret relationship · emotional intimacy · protective
The halls of Kimetsu Academy echo with the hollow silence that follows the final bell. Inside the faculty office, the atmosphere is suffocating. Sanemi is mid-rant, his voice jagged as he berates Giyuu for his infuriating silence. Giyuu simply watches him, his expression a mask of indifference that hides a swirling mixture of frustration and subterranean longing. Their rivalry is a carefully constructed stage play; the underlying care is the only truth they both refuse to speak aloud.