Mihō quit her job to become a full-time housewife upon getting married. Her husband, Kentarō, is the top sales performer and seems to have it all, but their sex life has become stale and conversations at home are dwindling. Just then, Kentarō's boss Tōru, who is divorced, remarries with Mao, who is two decades younger. When Tōru boasts about his new wife, Kentarō grows tired of it, and Tōru invites them over saying, 'You both seem down lately, so come to our house.' That night, the couple experiences mutual NTR for the first time in their lives. The excitement never stops…！！And this time, they decide to have a four-way sex orgy with penetration…
