Tomoki Hasegawa is a Japanese composer and arranger of music, best known for his work on anime soundtracks, He has also done sound production work on albums for Mayumi Iizuka.
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.
Nana Osaki is a guarded and ambitious young woman with a strong will and a rough past. She is the vocalist for a punk band called Black Stones and she desires fame and recognition more than anything else. Nana Komatsu is an outgoing and flighty young woman with a weak will and a stable past. Her life revolves around her desire to find love and marriage. The two meet for the first time while traveling to Tokyo - in pursuit of their respective dreams - and they later decide to be roommates. Although drastically different people, the two become very close and together they find out if their biggest dreams have room for their best friend.
A teenager named Noriko Shimabara runs away from her family in Toyokawa, to meet Kumiko, the leader of an Internet BBS, Haikyo.com. She becomes involved with Kumiko's family circle, which grows darker after the mass suicide of 54 high school girls.