Before We Vanish (散歩する侵略者, Sanpo Suru Shinryakusha, transl. "Strolling Invaders") is a 2017 Japanese science fiction film directed by Kiyoshi Kurosawa. It is based on a stage play by Tomohiro Maekawa's Ikiume Theatre Company and the novel adaptation written by Maekawa. It stars Masami Nagasawa, Ryuhei Matsuda, Mahiro Takasugi, Yuri Tsunematsu, and Hiroki Hasegawa.