Killer Killer is a Japanese manga series written by Kazutaka Kodaka and Yà Âichirà  Koizumi and illustrated by Mitomo Sasako. Kodaka launched the manga in 2016's 11th issue of Kodansha's shà Ânen manga magazine Bessatsu Shà Ânen Magazine on March 8, 2016, and ran until May 9, 2017. Although a spin-off of the Danganronpa series published to tie in with the ' anime series, the series was not initially marketed as such, with its connection to Danganronpa and full title being used as the twist ending of the first volume.