富士見書房
A light novel adaptation by Atsushi Wada was published by Fujimi Shobo on August 20, 2009 under their Fujimi Fantasia Bunko imprint. A manga adaptation was serialized in "Comic REX" and published by Ichijinsha on June 9, 2010, spanning two volumes. At Otakon 2012, Funimation Entertainment announced they have licensed the series for release in North America.