The series follows Ai, the seemingly perfect and untouchable student council president of Seido Academy, renowned for her stunningly beautiful legs. However, her pristine image is a facade. Behind closed doors, Ai is subjected to relentless sexual blackmail by the cunning and depraved vice-president, Tachibana. Over the course of the series, Tachibana systematically breaks Ai down, forcing her into increasingly humiliating and perverse acts. He exploits her position and her body, turning the student council room into his personal playground. Viewers witness Ai's descent from a proud president to a broken sex slave, her beautiful legs often the focus of Tachibana's degrading fantasies. The arc details her psychological torment as she's forced to perform oral sex, gets relentlessly fucked in various positions, and endures other extreme BDSM activities, all while trying to maintain her public composure. Each episode escalates the depravity, exploring themes of power dynamics, corruption, and the complete sexual submission of a powerful woman.