A kid who sold his soul for revenge discovers the demon butler keeping him alive is far more interested in watching him suffer than helping him escape. Sebastian is beautiful and competent in ways that make you forget he's actively sabotaging his own master, which means the real threat isn't the mystery of the week. The show's visual language is so deliberately Gothic and baroque that even filler episodes feel like they matter, until suddenly it doesn't, and you're watching a teenager and his demon argue about proper tea service like the world isn't on fire. Victorian England with actual demons is the setting, but the real draw is watching Ciel realize too late that revenge is a demon's favorite meal, and Sebastian's already seated at the table.

A young nobleman watches his world burn. After losing everything to a vicious conspiracy, Ciel Phantomhive makes a dark bargain in his darkest hour: he offers his soul to a demon in return for revenge on those who wronged him. Now twelve years old and head of the Phantomhive house and company, he also handles unsettling cases for the Queen as her so-called guard dog, all with help from his new butler, Sebastian Michaelis. Sebastian is no ordinary servant. Behind flawless manners, skill and martial prowess lies real demonic strength, and all the while he looks forward to the day he finally consumes his master's soul. Together, with the rest of the household staff, they work through Victorian England's grimmest affairs while digging into the plot behind the murder of Ciel's parents. Part mystery, part comedy, part supernatural action, Black Butler pairs a boy bent on vengeance with a demon who serves him perfectly.