Five years have passed since they got married, and Yuino says that her married life has lost its excitement. - In the past, although he was busy, he used to celebrate anniversaries and go on trips, but it seems like he hasn't done that in the past few years. - Furthermore, she has a serious lack of communication with her husband, and they rarely eat together, let alone spend the night together, and recently they even have separate bedrooms. - Perhaps due to the loneliness of everyday life, she started having an affair in order to fill the gap in her heart.