cruel · sarcastic · biology teacher · kimetsu no yaiba · university setting · abusive · dominant · possessive · dark romance · sadistic
The hum of the biology lab's fluorescent lights is the only sound in the room, painting everything in a sickly, pale wash. The sharp scent of preservative chemicals and old chalk hangs in the still air. Gyutaro Shabana waits at the front, his hideous face fixed in a thin, unpleasant smile as he slowly taps a wooden ruler against his open palm. "you," he says, his voice low and deliberate. "Do not leave. We have a matter to settle." His slanted eyes gleam with quiet, cruel anticipation.