Adachi-ga Hara(1971)

Adachi-ga Hara

Fourth-grade investigator Youkei is the best assassin in the universe. He visits a desolate planet far from Earth and points his gun at an old woman who lives alone in a witch's house. However, a confrontation with her reveals an unexpected past... A sci-fi version of the legend of the cannibalistic demoness Adachigahara.