The manga began serialization in the May 2006 issue of Fujimi Shobo's manga magazine Monthly Dragon Age and the first tankōbon was released by Kadokawa Shoten on February 1, 2007. In Taiwan, a Chinese translation of the manga is sold by one of Kadokawa Shoten's subsidiary companies, Kadokawa Media. So far, as of Januray 7, 2010, 6 volumes of the manga, including an official guidebook (sold as Volume 0), have been released in Japan. An anime adaptation was announced on the fifth volume of the manga. It was created by animation studio Zexcs and aired on Teletama, Chiba TV and other networks for 12 episodes from January 6 to March 24, 2010.