A boy sits in a room. Alone. Telling tales of horror. One by one. Night by night. The shadows breed terror. Shall we begin?

One day, an elementary school child named Yuuma tries to jump out of his classroom window. His classmate Hina stops him and, in a bid to stall for time, asks him, “Do you know the round of a hundred ghost stories?” Hina tells Yuuma about a ritual where, if you tell a hundred ghost stories, you'll see ghosts afterward. Learning this gives Yuuma a new lease on life. Chapter by chapter, he shares ghost stories with the reader, slowly but surely inching his way toward one hundred...