Black Butler

is a manga and anime series about a demonic butler, Sebastian Michaelis, forced to serve a twelve-year-old head of a noble family, Ciel Phantomhive.

Story
The butler Sebastian Michaelis is bound by a supernatural contract, which forces him to serve the twelve-year-old head of the Phantomhive noble family, Ciel Phantomhive, who has been orphaned. The contract allows Sebastian to take Ciel's soul as payment, when he completes all of his services.

Ciel tasks include getting revenge on the people who killed his parents. Sebastian must complete all these tasks, while also confronted by other problems England faces in the Victorian Era.