Mihaba and Takashi have been married for three years, living with Takashi's father under the same roof. Mihaba and Takashi had a good relationship when they were newlyweds, but Takashi started coming home late at night repeatedly, and now there is no conversation between them as husband and wife. The father watched over his son and daughter-in-law with concern. However, he was helpless to do anything about it. One day, the father accidentally witnessed Mihaba alone and lonely, indulging in self-pleasure.
