ASCII Media Works
A manga adaptation illustrated by Suiren Matsukaze started serialization in MediaWorks' "Dengeki Comic Gao!" magazine on February 27, 2007. On February 27, 2008, the manga ended serialization in "Dengeki Comic Gao!", but continued serialization in ASCII Media Works' manga magazine "Dengeki Daioh" that began on April 21, 2008, and ended on May 27, 2013. Eleven "tankōbon" volumes have been released under ASCII Media Works' "Dengeki Comics" label.