 The soundtrack also contains Erik Satie's "Gymnopédies", "Gnossiennes" and his composition "Je te veux", which were used in the film.The soundtrack is performed by the Eminence Symphony Orchestra and was produced by Satoru Kōsaki.A spin-off manga titled is illustrated by Puyo and started serialization in Kadokawa Shoten's "Young Ace" in July 2009.