In North America, the manga was released by Viz Media from April 2005 to October 2011. The anime series was later licensed in North America by Toonami Jetstream as a joint effort with Viz Media and aired on December 17, 2007, on its site, but before its completion, the streaming service was shut down. The whole series was streamed in English by Crunchyroll, while Sentai Filmworks licensed the series, with distribution from Section23 Films on DVDs.