In the January 2014 issue of Monthly Shonen Gangan the adaptation of the prequel spin-off series was announced. The first episode premiered on April 8, 2014 and ended on July 2nd, 2014. The opening theme is "Monochrome" by Dancing Dolls and the ending theme is "Yūgure Happy Go" (夕暮れハッピーゴー) by Haruka Chisuga, Aoi Yūki and Saori Hayami.