Teru Aoki (青木 輝) is on a train to Tokyo after a school trip. A disaster occurs which partially destroys the train and blocks a tunnel. When Teru awakes, he finds all his classmates and teachers are dead.
Overview：Teru Aoki (青木 輝) is on a train to Tokyo after a school trip. A disaster occurs which partially destroys the train and blocks a tunnel. When Teru awakes, he finds all his classmates and teachers are dead.
