The husband's favorite company junior, Sugimoto, finished his assignment at the branch office and was transferred to headquarters, starting to work with the husband. The couple often invited the single and living-alone Sugimoto over to take care of him. One day, unable to suppress his lustful urges any longer, Sugimoto made a move on Yuzuki, and the two ended up having a relationship. After being pointed out by her sister-in-law about the lack of sex in her life, Yuzuki knew it was wrong but found herself drawn to Sugimoto's allure, different from that of her husband...
