Inu-Ou is a musical fantasy film based on Hideo Furukawa's Heike Monogatari: Inu-Ou no Maki (Tales of the Heike: Inu-Ou) novel. The film will screen in theaters in Japan in 2021. The historical novel is based on the life of Inu-Ou, a famous Sarugaku Noh performer in the 14th-century. Inu-Ou tells the story of brotherhood between the legendary playwright and a certain Biwa musician, incorporating both modern song and dance.