Daisuke Ono
Three pieces of theme music are used for the episodes: one opening theme and two ending themes. The opening theme is "Metamorphose" which is performed by Asriel and written by Kokomi. The ending themes are by Daisuke Ono and Hiroshi Kamiya, and by Junichi Suwabe and Katsuyuki Konishi. Both ending themes are written by Yumi Matsuzawa, and the four performing artists are also voice actors for the series. Asriel released a single for "Metamorphose" on April 23, 2008. The singles for "Awake ~my everything~" and "Kakuse ~Dark and Light~" were released on May 28 and August 27 of 2008, respectively.