Adaptation of a fantasy drama manga series written and illustrated by Hiroyuki Asada. It was first serialized in Shueisha's Shounen manga magazine Monthly Shounen Jump from September 2006 to June 2007, before the magazine ceased its publication. It was then transferred to Jump Square, where it ran from November 2007 to November 2015. It chapters were collected in 20 tankobon volumes.
Episode 1 was supposed to air on 02.10.2010 at 23:55, but was 15 minutes late and aired on 03.10.2010 00:10 instead.