This film is adapted from the famous contemporary Japanese writer Asako's novel of the same name, which won the "Honya Award" in 2019, swept through major bookstores in Japan, and became the last gentle care of Hirai. The film adaptation will feature Rimi Ishihara as the mother in the novel and Nagano Nagano as her daughter (12 years younger than Rimi Ishihara). The film is scheduled for release in 2021. The film tells a story about family and love. 17-year-old Yuko Mori (Nagano Yayu) is a senior high school student whose mother died when she was young. After that, Yuko was continuously foster-raised, having three fathers and two mothers (Rimei Ishihara played the stepmother), went through seven family morphological changes, and even changed her name four times. At the same time, she also experienced the hardships of growing up from an ignorant teenager to an independent woman. She got the best love by passing on the baton of love between unrelated relatives. This story presents the current situation of an unrelated family that is more common than "the Thief Family" and "like a Father like a son". It makes people think about the meaning of family: even if we are not related by blood, we can still be happy.