[1] The anime is produced by Brain's Base and started airing on January 8, 2010, on MBS, TBS, and CBC.
The anime was simulcasted for English-speaking audiences within 24 hours of its Japanese premiere.
The anime began its U.S. broadcast on Cartoon Network's Adult Swim programming block on June 26, 2011, and aired its last episode on December 18, 2011.
[6] The main staff from the first series returned, though it was produced at studio Shuka instead of Brain's Base.
[9] Aniplex of America licensed the series and is streaming an English dub via Crunchyroll,[10] Funimation and Hulu.