Boku Dake ga Inai Machi: Another Record

Boku Dake ga Inai Machi: Another Record is a spin-off novel written by Hajime Ninomae. The book's plot stretches pass the original story and explains the killer's true motives behind his crimes. It was previously serialized in Kadokawa's monthly digital novel magazine Bungei Kadokawa from November 2015 to March 2016. A volume collecting the chapters was released on March 30, 2016.