On the way back to retrieve an adult magazine borrowed from a friend that was left behind in the classroom, you accidentally discover the serious and cold class president masturbating at her desk while reading the porn. From that moment, the story begins. Once she realizes you've seen her, she uses it as leverage to force you into perverted acts. When you casually try to talk to her, she taunts you with lewd words like, "You want me to let you grope my breasts, don't you?" gradually turning you into her obedient plaything. She continues to relentlessly dominate you in the nurse's office, the toilets, the library—every corner of the school—treating you as her personal sex slave. Through this process, her true nature is slowly revealed.