Okada Akiha is 27 years old, she is not married and works as a designer at Morita Design. She enjoys the bachelor life and is not going to get married at all. But one day in a bar Okada met Momose Shu. They started talking, and Okada said that she did not want to get married, but her grandmother insisted on the opposite. Then suddenly Momose asked her to marry him.
Momose Shu is 30 years old. He works for an advertising agency and is in good standing with his colleagues. For a certain reason, he is looking for someone who will agree to enter into a fictitious marriage with him. That's why he proposed to Okada.
The restaurant owned by Okada's grandmother is about to go bankrupt. To save him, the girl decides to accept Momose's offer on the condition that he will lend her 5 million yen to save the restaurant. Soon Okada and Momose officially registered their marriage and began to live together. Gradually, she begins to feel tender feelings for her husband, but finds out exactly why he needed a fictitious marriage.
Based on the manga by Yuki Aoharu.