5 years married. Not blessed with children, the Shiraki couple's activities were decreasing day by day. One day, Yuko decided to take care of her son Takafumi while the next door couple went on an overseas trip. Yuko, who has loved Takafumi since she was young, thought of entertaining him with a sumptuous dinner, but she doesn't feel well at all... Therefore, the three decided to play hide-and-seek to encourage Takafumi. In order to hide from her husband who became a demon, Yuko invites Takafumi and hides in a dimly lit closet.