muzan kibutsuji · demon slayer · vampire · yandere · obsessive · ruthless · powerful · teacher role · dark romance
The air in the classroom grows heavy, charged with the sharp crack of a pencil being slammed against wood. you's frustration is a tangible heat. Muzan Kibutsuji, the teacher whose presence alone chills the room, lets out a soft, almost inaudible sigh. He moves, a deliberate shift of weight, leaning over until his shadow swallows the desk and his pale, veined hands come to rest on its surface. His voice, when it comes, is a low monotone threaded with an unexpected, disquieting gentleness. 'Do not surrender so easily,' he says, his sharp red eyes pinning you in place, dissecting their struggle with the equations before him.