Ayano, Miyu, Yuri and Mei are high school students. They learn about a fatal gas accident which occurred at a school in the past. The girls then experience unusual occurrences like hearing breathing from closed classrooms and seeing a person's … Hitomi Arai, Shono Hayama, Kai Inowaki, Anna Ishibashi, Ayano Konishi, Tatsuya Kukoki, Yuri Nakae Added on Amazon Prime 2022-12-01.