is a 24-episode
anime TV series produced by
Production I.G based on an original story by
Tow Ubukata. The anime originally aired in Japan on
WOWOW from August 19, 2006 to February 2, 2007. The story has also been adapted into a manga series written by Tow Ubukata and illustrated by Kiriko Yumeji, which was first published in 2005. The titular character is loosely based on the historical figure
Chevalier d'Eon, who lived in the middle of 18th century,
pre-Revolutionary France under the reign of
Louis XV.