Hitozuma kasei-fu: Uzuki ni oborete(2012)

Sato Akio and Michiru have been married for six years, but their relationship, including their sexual relationship, has cooled a little. She works as a housekeeper for the Harashima family, and her employer, Kunio, has a 20-year-old daughter, Etsuko. Kunio, who has lost his wife, begins to be attracted to Michiru, who works as a housekeeper...