Kousuke Maruya is a 29-year-old sales staff member of a beer manufacturing company and often uses his cuteness and killer smile as sales weapons. As he is entering his 30s, Kousuke encounters a shocking experience that makes him realizes that his cuteness has an expiration date and he bids his passive life a goodbye while falling in love for the first time. Meanwhile, Izumi Sanada is known to be a "robot woman" with no love experience for the past 26 years of her life. She was originally a researcher, but was transferred to the sales department with Kousuke.