Yesterday at Calypso Amsterdam they were showing this manga-based movie. It tells the story of a couple of middle-school students from Tokyo who on their way back from a schooltrip get into what at first seems like a train accident. There are only 4 survivors of the initial crash, of which the story follows Teru and Ako. The first 20-30 minutes of the movie is spent in the collapsed train-tunnel and the train, with occasional short flashbacks and memories of the students from the moments just before the crash. But what caused the crash, is it only just a train-crash, or is something more going on.