37-year-old Asuna Ikemoto. While working as an office sales clerk at a local real estate company, she also diligently fulfills her role as a mother to one child. Despite the busyness of daily life and the exhaustion of parenting, she has maintained a fulfilling routine. However, after 11 years of marriage, she began to notice that her relationship with her husband had gradually become monotonous. As a result, sexual frustration started building up, causing her to indulge in lewd fantasies during mundane moments of everyday life. Soon, her frequency of masturbation increased steadily, until she could no longer suppress her desire for infidelity. This is a desperate story of a woman in her late thirties, whose long-repressed desires finally break free, unleashing her deeply aroused inner cravings.