Black Butler is an ongoing anime series that started in 2008. So far 46 episodes of Black Butler have been aired. With a total of 27 reported filler episodes, Black Butler has a very high filler percentage of 59%. Ciel Phantomhive is the most powerful boy in all of England, but he bears scars of suffering. Forced to watch as his beloved parents were brutally murdered, Ciel was subsequently abducted and violently tortured. Desperate to end his suffering, the boy traded his own soul for a chance at vengeance, casting his lot with the one person on whom he could depend: Sebastian, a demon Butler summoned from the very pits of hell. Together, they’ll prowl the darkest alleys of London on a mission to snuff out those who would do evil.