When her husband was not at home, Ninomiya's lustful wife had incest with her husband's brother. She and her husband and her brother currently live together in a small house left by their father before he passed away. The younger couple is working part-time to save money to buy a new house and then move out for convenience. But life is not like a dream, in life there are often sad guys. That morning the husband went to work, only the wife and her brother were at home because they had lived in the same house for a long time so they had feelings for each other. While cleaning the house, the husband saw that she was dressed too sexy and pointed wearing a bikini and not wearing a bra, perhaps this was also her purpose from before to sexually seduce her husband. Unable to resist, he rushed into her like a ferocious beast that had been craving fresh meat for a long time. Of course, she was no less than him, launching a series of attractive sexual positions in response.