Sugimoto, a junior at the company that her husband loved, finished working at the branch and was assigned to the head office, where she started working alongside her husband. The two of them take care of Sugimoto, who is single and lives alone, by inviting them over to their house. One day, Sugimoto, unable to control his lewd urges, approaches Yuko, and the two end up having a relationship. Yuko, who was conscious of her lack of sex life after being pointed out by her sister-in-law, was drawn to Sugimoto's charm, which was different from her husband's, even though she knew it was wrong.