Yuna Shiina, a beautiful office lady who works for a major underwear manufacturer, and Misato Tachibana, a former colleague. It should have been a one-time secret relationship in the company, but Misato became a full-time housewife and suffered from sexlessness. Misato realizes that the person who gives her the most affection is not her husband, but Yuna, and decides to divorce. At the same time, in the same place, sharing the same pleasure with the partner who is completely entrusted with both body and mind, and attacking each other's erogenous zones, seriously climaxing with dense lesbian intercourse!