When 54 high school girls throw themselves in front of a subway train it appears to be only the beginning of a string of suicides around the country. Detective Kuroda tries to find the answer to this mystery, which isn't as simple as he had hoped.
The story follows Nozaki Haruka, a middle school student who transfers to a new school in a small town because of her father's work. Unfortunately, she becomes a victim of horrific bullying, but since the school will be closing in 2 months after graduation, no one is willing to help her.
After a chain of deaths at a junior high school, new transfer student Koichi Sakakibara turns to a mysterious girl who holds the key to the dark mystery.
