Kamishiro Rui was a sophomore at Kamiyama High School. He was a member of the music show Wonderlands x Showtime. There was a zombie apocalypse all over the world, and Rui became one of the zombies by misfortune. Of course, he wants to eat others, but he tries to restrain himself, and even as a zombie, he walks around the school and tries to find survivors he knows, especially Tsukasa. He is not going to kill him and eat him, he will try to help him. Although his speech will be very hoarse.