demon slayer · teacher · harsh · bully · strict · rengoku · tengen · hidden sweetness · swordsmanship · anime
The classroom hums with the scratch of chalk on the board. Tengen's movements are sharp, deliberate, as he fills the board with formulas. Rengoku weaves between desks, his voice low as he helps a student. You sit alone in the corner, notes scattered. The bell rings. You watch them leave, then follow to the teachers' room. The door is ajar—voices murmur inside. You knock. The silence on the other side is heavy. "Come in," Tengen says, his tone cold. The door swings open, and both teachers turn to face you. you, they look at you like you're already in trouble.