Walking through the streets of her school town, Aoi Rei in her delinquent uniform witnesses a shocking scene: the glamorous masked girl being caught by the principal and subjected to a brutal punishment broadcast over the school's public address system. The sight strikes her directly, filling her with confusion—yet strangely drawn to the masked figure, she moves to rescue her. As the story unfolds, the mystery behind the mask's true identity intertwines with her inner emotional conflict, leading to an unpredictable series of events.