Mako Oda, a married woman with big tits, meets her husband's colleague, Toyokawa, and when he drunkenly makes advances on her, she finds herself unable to resist. Soon after, she begins secretly meeting him several times a month behind her husband's back. Their affair grows increasingly intense, plunging her into passionate, wild sex. One day, Toyokawa makes an unusual demand—he wants her to completely shave her pubic hair. Desperate to keep this secret from her husband, Mako's daily life becomes consumed by her affair with Toyokawa. As their bond deepens, she grows more dependent on him. However, what began as an illicit thrill gradually turns into a dangerous relationship that threatens both her mind and body.