It's been 7 years since I got married. Busy every day working as a diplomat at a life insurance company while being busy with housework and childcare. Recently, I have noticed that the chances of being seen as a woman at home and at work have decreased. Somehow I was lonely, and about half a year ago, when my work settled down at the beginning of the month, I lied to the company and met a person I met on a dating app and had a relationship. Yumika, who was strangely excited by the thrill of working in the afternoon on weekdays and the feeling of guilt betraying her family, has been addicted to the swamp of adultery ever since. Today, at the beginning of the long-awaited month, she who came out of the company has a lewd and special time.