Hikaru, a member of Sweet Angels, is kidnapped by the sinister organization "Kuroshikai" that terrorizes her hometown, and wanders the streets searching for her missing comrades. The Kuroshikai, known for capturing suspicious individuals and subjecting them to so-called interrogations that are actually sessions of pleasure-based torture, quickly spots her. Skillfully tricked into drinking a beverage laced with aphrodisiac drugs, Hikaru is bound and rendered helpless, exposed to relentless pleasure torture. As she struggles desperately to resist, the waves of pleasure gradually consume her, corrupting not only her body but her mind as well. Her descent reveals this is no mere torture—it marks the beginning of complete psychological domination.