 Other cast members includes Yūki Amami, Katshusa Namase, Ikusaburo Yamazaki, Masatō Ibu and Toshiki Seto.A novelization of the film by Van Madoy was released on November 14, 2019.A more loosely adapted Chinese live-action movie, "Animal World", starring Li Yifeng and Michael Douglas, was released on June 29, 2018 in China and other countries.