Hakushaku to Yousei is a series of light novels written by Mizue Tani and illustrated by Asako Takaboshi.
The main Story revolves Lydia Carlton, a fairy doctor and the "Legendary Blue Knight Count" in their quest to find the Sword of Merrow. The Single My fairy was the ending theme of the anime Series. In 2008 an Anime adaptation created. In 2008 4 Character Singles were released. In 2009 a visual novel for Playstation 2 was released on April 30.