 Two light novels written by Chabō Higurashi and illustrated by Ume Aoki were released by Houbunsha under their "Houbunsha KR Bunko" label.The first novel was released on March 31, 2007 entitled , and the second followed on September 30, 2007 with the title .The novels are not a new adaptation of the manga series, but instead draw directly from the manga's material.