Kana, who is dating Koji with the intention of getting married, used to work in the sex industry, but of course she never told Koji about it and intended to keep it a secret until her grave. Kana came to say hello to Koji's father, who she had only ever spoken to on the phone and had never seen him before. She came to tell him that she would be working in Koji's hometown starting today as a result of their marriage, and that the three of them would live together until her job stabilizes, but her father-in-law turned out to be a terrible man, a former customer of hers from her days at the sex industry.