24-year-old Murakami Maiko is a very sheltered girl who has never had a relationship with a guy. It is decided that she will go for a matchmaking session with someone recommended by her father Genichiro who owns a company. The man Hanasato Harumi is 20 years her senior and also a divorcee. Although Maiko is less than thrilled, she discovers when they meet that he is a charming man with an air of maturity and she instinctively makes a move on him. Harumi had intended to meet Maiko once before he turned her down since she is the daughter of the CEO of an important client. However, she turns out to be more than he had imagined. Maiko confounds him the whole time but he is attracted to her straightforward, pure, and dignified nature. He accepts the completed marriage registration form from her on their third date after she presses him for a kiss. They get married despite their 20-year age gap, and their life as newlyweds begins.
Takanashi Chiwa is an office lady who works part-time at a club because she is in debt. One day, she gets into a quarrel with a wealthy and handsome customer who came to the club and is fired. The next day, a depressed Chiwa is summoned by her boss and finds the rude man from the day before down there. His name is Mamiya Hokuto. Hokuto suddenly proposes a contract marriage with Chiwa. Although she is initially resistant to the idea, she has no choice but to accept. The two of them overcome all sorts of troubles and become a real couple.
