The opening theme song is "Buddy" by Maaya Sakamoto while the ending theme song is "Starboard" by Hitomi Kuroishi. Four special ending theme songs were used in certain episodes; "Starboard (Silky Wind ver.)", sung by Hitomi Kuroishi in another language, was used in episodes 8 and 20, "Innocent Eyes" was used in episode 17, "Sorrows of Life" was used in episode 18 and "Grand Exile" was used in episode 19.