The story is set in 19th century England and centers on a "fairy doctor" named Lydia. Her life takes a 180-degrees turn when she meets a legendary blue knight count named Edgar and his crew. He hires her as an adviser during his quest to obtain a treasured sword that was supposed to be handed down to him by his family. (Source: ANN)

Hakushaku to Yousei was published in English as The Earl & the Fairy by VIZ Media under the Shojo Beat imprint from March 6, 2012 to December 4, 2012. It has been published as El Conde y el Hada in Spanish by Editorial Ivrea from August 1, 2014, to March 6, 2015.