The Traveler (Opening theme) Composition & Lyrics: Hiro Koyama Arrangement: kaya & Junya Matsuoka Performed by kaya Recorded by Kenichi Arimura, 岡田淳 Mixed by 岡田淳
Heart (SORA) (Ending theme) Composition & Lyrics: Hiro Koyama Arrangement: kaya & Junya Matsuoka Performed by kaya Recorded & Mixed by Kenichi Arimura