a manga adaptation, illustrated by ayato sasakura, was serialized in ascii media works' manga magazine "dengeki daioh" between the april 2005 and october 2011 issues. the individual chapters were collected and published in ten "tankōbon" volumes from october 27, 2005 and october 27, 2011. a special limited edition version of volume two was bundled with a booklet titled "grimoire" including contributions from guest artists and writers for various illustrations, manga, and short stories. viz media licensed the manga for english distribution in north america. viz released six volumes between april 17, 2007 and september 21, 2010, but then cancelled the release of the final four volumes. the manga is also licensed in south korea by daewon c.i., in taiwan and hong kong by kadokawa media, and in germany by egmont.