The mother-in-law whose father remarried and lives together is a woman who is not much older than himself. She has a complicated feeling about her family's gathering, and the skin to skin with the kotatsu. I'm lusting for the body of a woman who is too young to call her mother and erection! The other person feels the same and secretly flirts under the kotatsu. Before long, the two are unable to hold back and find their father nearby...
