Kana is dating Koji with the precondition of marriage, but she used to work in the sex industry and hasn't told Koji about it, intending to keep it a secret until her grave. Kana came to greet Koji's father, whom she had only spoken to on the phone and didn't know his face. She came to discuss starting work in Koji's hometown from today as an occasion for their marriage and living together with the three of them until her job stabilizes. However, unexpectedly, her future father-in-law was a customer from her past days in the sex industry and the worst kind of man.
