Yumiko, a married woman, suffers from deep sexual frustration as she receives almost no affection from her husband. Her life changes drastically when she meets Keiji, the man who moves in next door. For the first time, she is taken by another man and awakens to the pleasure of adultery. Through relentless sex tapes, forced encounters with strangers, and intense training, her heart becomes increasingly drawn to Keiji. Eventually, she makes the conscious decision to surrender herself completely as his mistress. E-BODY's comic live-action adaptation project launches with this first installment, delivering a serious drama series that realistically portrays infidelity, cuckolding, the awakening of a lustful woman, and explicit, sensual training and intercourse.