My younger brother made a terrible decision when he and his beautiful young wife Anzai moved in with his unmarried older brother. It's like offering yourself on a silver platter to someone else. Indeed, it's natural for the lonely older brother to crave sexual intimacy, but the trigger for his desire is none other than his younger brother's wife. She is truly a promiscuous woman, who managed to seduce the younger brother and is now trying to seduce the older brother. She is cunning, constantly engaging in provocative and arousing actions, such as deliberately wearing revealing yoga pants in front of the older brother to push him over the edge and make him unable to resist her, leading to them having a physical relationship. After that incident, they developed feelings for each other, a relationship that is very secretive yet profound, to the point where the wife would be performing oral sex on her husband while the older brother secretly engages in an affair with her from behind.