"Yuri" has a secret she can't tell her husband. It's the encounter with an older man named 'Kato' who lives in the same apartment building. What started as a casual affair soon becomes a relationship she can't break away from... Whether it's due to a lack of chastity or not, 'Yuri,' who wants a child, closes her eyes with a look of pleasure as 'Kato' hesitates about unprotected sex.
