Originally airing in 2013, the series was directed by Naoto Hosoda based on the series composition by Masahiro Yokotani.
The show is based on the light novel series by writer Satoshi Wagahara and illustrations by 029.
The novels and the manga adaptation have both been released in English by Yen Press. Check out our review of the series as released by Funimation on DVD/BD.
Plot concept: When Satan is run out of his infernal kingdom, he finds himself virtually powerless in modern-day Tokyo.