Ali Project
Five pieces of theme music are used for the anime series: one opening theme, two ending themes and two insert songs. The opening theme is by the Japanese band Ali Project, and the ending themes are and "Remedy" by Maaya Sakamoto. The insert songs are and "PROUD" by Lisa Komine. An instrumental version of "Kitei no Tsurugi" was also used as an insert song in episode 20. The Ali Project released the "Kitei no Tsurugi" single on November 19, 2008. "Ame ga Furu", Maaya's seventeenth single, was released on October 29, 2008, and "Remedy" was released within Maaya's sixth album, Kazeyomi, on January 14, 2009.