My wife is physically weak and has been hospitalized for a long period of time, and I currently live with her stepchild Lina. - I love my healthy daughter who has grown close to me and does the housework in place of my wife. - One day, Rina offered to help me with sex. - Although I should never mess with her, my loneliness and sexual desire are at their limit without my wife. - I succumbed to my daughter's temptation and let her comfort me with my hands and mouth. - The days of immorality where the image of my wife overlaps with my daughter and they intersect again and again... - Then, she announced that she wanted to be pregnant with my child instead of the mother, who wanted a biological child...