is an anime series created by Yasuchika Nagaoka, Anime International Company and Project Godannar, which consists of IMAGICA Entertainment, Taki Corporation, KlockWorx, NTT Data Contents Planing, Sojitz and Oriental Light and Magic. The series is produced by AIC and OLM, with Nagaoka serving as director and Hiroyuki Kawasaki serving as its main script writer. The first season aired in Japan from October 1 to December 24, 2003 on AT-X. A second season later aired from April 5 to June 29, 2004. Both seasons were licensed by ADV Films for North America. However, as of 2013, it is now licensed by Sentai Filmworks.