At Nansui Academy, new instructor Atsuko begins her teaching duties full of optimism after accepting a post recommended by a trusted contact. When privately captured images appear on the main notice board, suspicion quickly turns toward the school's reclusive student Kenji. Publicly vouching for his character draws her into the spotlight and sets off a chain of unforeseen events. Subtle shifts in power soon complicate her position, leaving her to navigate growing pressures within the academy walls.