While feeling happy in everyday life with her husband, his wife Kaho felt unsatisfactory every day as usual. It was Sada, a friend of her husband's school days who opened a hole for her in such days. Kaho begins to open her heart to his kindness, who always treats her kindly. One day, Sada came when her husband was away working overtime. Kaho, who felt a different daily life during her first time alone, feels guilty for her husband, but she accepts Sada's hot lust.
