The light novel series began in 2008 and has twenty-two volumes to its name so far.
The show landed on September 6th, 2016 in both regular and limited edition form priced at $64.98 and $84.98 respectively.
The series was directed by Tatsuya Yanagisawa, who directed the previous season, based on the series composition by Takao Yoshioka and character designs by Junji Goto.