Something awaits in the darkness.
10 Volumes – Completed
An accident happened. A train full of students going back from their field trip crashed and trapped in a tunnel. All of them died except for Teru, Ako, and Nobuo. They are trapped in the darkness, waiting for help that never came. Something big happened out there. An explosion that caused the giant earthquake. The only way to know is they have to find a way to get out of that tunnel. Nobua which is engulfed by fear of darkness turns into a madman and causing a lot of trouble.