Nanami, who has been married to her older husband for a year at work, is impatient with the results of her fertility. Perhaps because of her pressure, her husband has been having difficulty getting an erection lately. One night, while touching her husband who returned unknowingly, he notices that the cock is erected. Nanami gives a blow job as soon as she doesn't miss this opportunity. However, it was not her husband, but Kinoshita, who was a subordinate of her husband, who said, "Get out!" Since then, Kinoshita has approached Nanami aiming for her husband's absence. On the other hand, Nanami couldn't forget the taste of the cock that fellatio at that time, and the two drowned in affair.