Personally, I like this anime as it find it kinda creepy however at the same time it is funny. A story of a child who made a contract with a demon. >_< I love Sebastian when he said "I'm just one hell of a butler" OMG its so damn cool. However in some way I pity Ciel for having such a tragic past and only left with hatred within him. Ciel is unclean because of the mark of the slave burned on the side of his chest. This storyplot I find it awesome with many different climax in the anime.
Summary:
In a manor house on the outskirts of Victorian era London, butler Sebastian Michaelis serves Ciel Phantomhive, the orphaned twelve-year-old head of an English noble family and a toy and candy empire, who serves directly under the Queen. Sebastian carries out any task required by his master while solving the problems plaguing England with ease and perfection, because of his demonic lineage and Faustian contract with his master.The parents of the Phantomhive estate were murdered when Ciel was younger. As a result, he made a deal with a demon asking for vengeance upon those who had disgraced him, and the Phantomhive name, in exchange for his soul.