Formerly a popular instructor at a major cram school, Aoi is invited by a former colleague to teach at a private school. Unlike the prestigious institution she left, this school gathers students placed in harsh conditions, where smoking, fighting, and classroom breakdowns are everyday occurrences. When Aoi attempts to reach out to Kyudo, the dominant figure in class, she finds herself cornered instead. In this severe environment, she gradually builds trust with her students through captivating lessons that make full use of her body. As the story unfolds, the reason Aoi became a female teacher comes to light—her truth slowly emerging into the open.