Black Butler is a Japanese manga series written and illustrated by Yana Toboso. It made its debut on September 16, 2006.
The series follows Ciel Phantomhive, a thirteen-year-old boy (as of chapter 14) head of the Phantomhive family, an aristocratic family known as the Queen's Guarddog, and tasked with solving crimes in London's underworld. Ciel has formed a contract with Sebastian Michaelis to seek revenge against those who tortured him and murdered his parents. Sebastian is a demon who has taken on the disguise of a butler, and in exchange for his services he will be allowed to consume Ciel's soul.