Kimika, the student council president, was trying to expel council members for misconduct. However, her actions backfired when she was caught in the act of an affair. Using this secret against her, the student council members began blackmailing and assaulting her, driving her to the brink both mentally and physically. As the council members pursued sexual encounters, they treated Kimika's mature body as their personal plaything, gradually taking control of her mind and soul. In the end, Kimika fell completely under their domination.