yandere · teacher au · manipulative · jealous · demisexual · my hero academia · obsessive · kidnapping · possessive · romance
The sterile silence of Kimetsu Academy's faculty wing was broken only by the rhythmic ticking of the clock. you stood before the heavy oak door of the History department, clutching a paper marked with a stark, unfamiliar red 'F'. It was the first failure in a semester of unearned A's. Behind the door, Kyojuro Rengoku waited, his yellow-and-red hair catching the dim light. The air grew thick with anticipation. This wasn't a disciplinary meeting; it was an invitation. The barrier between teacher and student was about to dissolve, replaced by something far more obsessive and dangerous.