Bonus volume) ( List of volumes ) Light novel Written by Kougetsu Mikazuki Illustrated by Milan Matra Published by Fujimi Shobo Demographic Male Imprint Fujimi Fantasia Bunko Magazine Dragon Magazine Original run July 19, 2008 – January 20, 2010 Volumes 4 TV anime Directed by Shinji Ushiro Produced by Seiichi Hachiya Written by Katsumi Hasegawa Music by Yukari Hashimoto