Although their relationship is friendly like that of friends, Rie helps her husband by modeling prototype underwear at the product development department of a lingerie manufacturer. Her mature body never loses its allure, but they haven't had sex in about half a year. One day, her husband brings his subordinate, Kawazu, home. Kawazu always blushes seeing his boss's wife modeling the underwear he developed, and Rie feels herself getting hotter too. Unable to hold back any longer, she takes advantage of her husband's drunken state...
