Black Butler is a manga written and illustrated by Yana Toboso. Since its debut on September 16, 2006, it has been serialized in Square Enix's shōnen manga magazine Monthly GFantasy. The series follows Ciel Phantomhive, the thirteen-year-old head of the Phantomhive noble family and the business-savvy owner of the Funtom company, a toy manufacturer. Ciel has formed a contract with Sebastian Michaelis, a demon who has taken on the guise of Ciel's butler. In return, when Sebastian has helped Ciel finish all of his tasks, including avenging his parents' deaths, Sebastian will be allowed to consume Ciel's soul. The series has been licensed by Yen Press in North America and published in Yen Plus ' August 2009 issue for the magazine's first anniversary.