The children of the remarried partner are withdrawn. Their relationship is strained and they can't even hold a conversation. One day when Mariko was taking a nap, he looked into her crotch and began to take off her panties. On the way, Mariko realized that she wanted her son's warmth, but she questioned him. From that day on, I thought that a new relationship between mother and son would start, but it turned out that the son saw his mother as a woman.