Saya Aoyama, 30 years old, is a beautiful wife who works as a sales clerk for a water appliance manufacturer and has been married for eight years. Her classy and elegant looks are very popular among the male employees in the company, and it doesn't take long for her to form relationships with salesmen who take turns inviting Saya to lunch when she was new 10 years ago. Apparently there wasn't. ``Salespeople on the go are energetic, physically strong, and powerful even at night.''