A married woman, Rina, who lives with her husband's younger brother and his wife. One day when she was living a harmonious life, her sister-in-law, Kaori, brought a stranger to her house. Rina is shocked when she witnesses Kaori's husband and her brother-in-law Koji devour her body, but Koji, who knew her wife's unfaithfulness from before, said, "I'm excited about being taken down. I will do it." He suddenly pushes her down. Because she was sexless with her husband, Rina's body unconsciously asked for her cock, even though she disliked SEX for the first time in a long time.
