 A fourth anime season titled aired on TBS and BS-TBS between October 5 and December 21, 2012 and has also been licensed by Sentai Filmworks.The series was simulcast by The Anime Network in North America and Anime on Demand in the United Kingdom.An original video animation, titled , was released on Blu-ray Disc and DVD on November 27, 2013 and aired on BS-TBS on November 29, 2013.