Director extraordinaire, Takashi Miike, makes the prototype for what horror movies should be. Like TJ said, "there is no fat to trim on this movie." Every character serves a specific purpose and has a cause and effect for the way this movie progresses. It's deeply disturbing and ahead of its time in some way, including how it addresses misogynistic, incel culture. This is pretty close to a 10 in both of our horror books.