Black Butler (黒執事 Kuroshitsuji) is a manga and anime written and illustrated by Yana Toboso. The series follows Sebastian Michaelis. He is a demonic butler who’s bound by a contract to serv Ciel Phantomhive. Ciel is a twelve-year-old boy who’s the head of the noble family Phantomhive in London. The Phantomhives runs a company that produces toys and candy. Sebastian have to do all Ciel order him to do. And in return, when Ciel has finished all of his tasks including getting revenge on the people who killed his parents, Sebastian is then allowed to kill him and take his soul.