magical hat

See also

• Wikipedia article (Japanese): http://ja.wikipedia.org/wiki/%E3%81%BE%E3%81%98%E3%81%8B%E3%82%8B%E3%83%8F%E3%83%83%E3%83%88
• ANN article: http://www.animenewsnetwork.com/encyclopedia/anime.php?id=1694