Mc got married to Mayumi, they having sex three times each week. But recently mc had a wild thought. He wanted his wife to have sex with another men. The thought is just keep coming, and it’s even getting stronger than before. Mayumi refused her husband’s wish, but he’s being persistent and insisting Mayumi to have sex with another men. Mayumi finally accepted her husband’s wish with one condition. She would only want to do it with Shinkai, her boss. The only man she trust so much aside her husband. Shinkai and Mayumi often go out on business trips. And They have been doing it secretly before, but now since her own husband requesting it, nothing wrong with it, right?