Ahh... the wonderful Gold Crown Town, fiction home of Ahiru.
In Japanese, the word "duck" is "Ahiru".
So....
Princess Tutu is a 2004 Kids' Anime show, and is HILARIOUS.
Synopsis (english):
A little duck longs to see a lonely prince smile. The prince has no heart, as well as no emotions. Mr. Drosselmeyer, a dead "story spinner", gives the duck a pendant to transform into a girl. The girl goes to a school, and takes ballet, which she is no good at. To help the prince regain his heart, she uses the pendant to transform into Princess Tutu. She takes shards of the prince's heart that were living in the voids of other people, and returns them to the prince.
Japanese Promo Trailer:
I own nothing except my own knowledge.