Reiko Fujimori, 28 years old. She cares about her students and is enthusiastic about guiding them. When she finds out that her student, Murai, is working part-time at a night club with a shady reputation, she decides to visit the place. However, the place is only a members-only bar in name, but behind the scenes, women are trained and offered to customers as a spectacle. Reiko, who is unaware of this, arrives at the bar, where the owner, Daigo, offers her a drink, and while she is in a daze, she ends up being anally trained.