Hana is a 32-year-old married woman who has been married for 8 years and has a 6-year-old child. She usually works as a children's piano teacher. Now that her child is settled, she wants to work more, but due to the declining birthrate, it's hard to get teaching jobs. So she registers on an adulterous mistress site. She is in a relationship with a staff member who is looking for a sugar daddy. She signs a mistress contract for 150,000 yen a month. She is so obedient that she has finally managed to appear in an adult video!