Shota's father has a woman on the side, so his parents often argue and decide to divorce. Without a mother, his father often buys curry outside because no one knows how to cook rice. Not long after, his father said he would bring a new mother home, Shota was very happy, so his father was reassured. Shota's stepmother is a young, beautiful woman with a much bigger butt than his mother. He quickly fell in love with Yui, especially her pair of buttocks. Shota constantly has actions that are both lewd and innocent, making Yui both angry and amused. But Shota becomes more daring when he dares to have sex with her right next to her husband! She is very angry, but when she discovers Shota's feelings for her, she changes and wants to give her entire heart to him.

Diễn viên: Yui Oba