Kuroshitsuji (2008 - …)

The series "Kuroshitsuji" is a Japanese fantasy anime set in an alternative Great Britain. The story revolves around the young Earl Ciel Phantomhive, the heir to a vast fortune and ancestral estate. He has a whole staff of servants at his disposal, but they are all led by the unique and brilliant Sebastian, a butler with impeccable British manners, a sly smirk, and a multitude of dark secrets. A curious mutually beneficial contract, with the price being Ciel's soul, binds the servant and his master together.