マガジンSPECIAL
is a spin-off by Boku that focuses on the series' primary female protagonists, which was released in Kodansha's "Magazine Special" from November 20, 2014 to August 20, 2016. The chapters were collected into four "tankōbon" volumes from May 15, 2015 through September 16, 2016 in Japan, and from November 10, 2015 through April 25, 2017 in North America.