Reika Kujou, the esteemed student council president, suffers a devastating fall from grace when she is randomly selected to be the school's "comfort station," a public sex tool used to satisfy the student body. After enduring a week of systematic humiliation and mass violation, her dignity is completely destroyed. Meanwhile, a student named Chika, driven by love and obsession, decides to forgo the public ritual to become Ryou's own personal pet and sex tool.