The second season of the anime series "Princess Tutu" (2002-2003), makes many references to "Coppélia", beginning with episode 15, "Kapitel des Junges: Coppelia". where one of the main characters begins trying to obtain a "pure heart" as a sacrifice to revive a monster Raven. The character Princess Tutu puts a stop to this by reminding the potential sacrifices that they really do not want to give up their hearts, in one instance stating that Swanhilda, though she pretended to be a doll, wanted to be able to laugh and cry as a real human with her fiancé.