BiS will release the book BiStory ~Who Killed Idol?~ (BiStory~アイドルを殺したのは誰?~) on August 20.
BiStory ~Who Killed Idol?~ traces the history of the 1000 first days of the idol group BiS from its creation in November 2010 with the leader Pour Lui to its latest line-up with 6 members.
The book has 192 pages. It is published by M-On Entertainment!.