Where is Japanese sister Kim from in China?

Sister Jin of Kamakura, Japan is a native of Kamakura. According to relevant public information, Kamakura Times is a Japanese film directed by Takashi Yamazaki, which tells the story of the mystery writer Izawa Seiji and his beloved wife Qiu Zi who solved various strange cases in Kamakura. In the film, Sister Jin is a magical existence that transcends four species.