 Though the world premiere of the first episode took place at Southern California's 2008 Anime Expo, the series premiered in Japan on the television network TBS (Tokyo Broadcasting System) on October 3, 2008.The anime broadcast a total of twenty-four episodes, the last of which aired on March 20, 2009.To commemorate the series' anime adaptation, Shimizu and Shimoguchi decided to create a one shot manga, recreating the entire first episode of the anime, in which the plot differs in many aspects compared to the beginning of the manga.