My brother Satoru had a lover, but I'm worried about his younger sister, Noriko, who is still absorbed in a relationship with her middle-aged wife and child, Dandy Mitamura. A younger sister who has come to the futon and is sleeping soundly, and an older brother who is inspired by the smell of the mature woman and masturbates. Is incest a blasphemy to God? The third in the "Pink Curtain" series by George Akiyama, which depicts the deep bond and forbidden love of brothers and sisters with the power and delicacy of the previous two works!