The performance of the construction company that her husband Masao was running deteriorated, and Ozawa decided to buy it. Masao is in charge of sales and Yurine is to work under Ozawa as a secretary, but Yurine has a secret. When her business was in trouble, she took on a large amount of debt. She discusses this with Ozawa, and in exchange for lending her money, Ozawa agrees to become her mistress. And Ozawa is his secretary's day