Black Butler: Book of Circus has landed on Hulu and Crunchyroll, offering the complete 10-episode arc with both English dub and subtitle options. This 2014 entry plunges Ciel Phantomhive and his demon butler Sebastian Michaelis into the shadowy world of the Noah's Arc Circus troupe, a traveling spectacle whose dazzling performances hide a sinister secret: the mysterious disappearance of children across London.
Produced by A-1 Pictures, the studio behind acclaimed series like Sword Art Online and Kaguya-sama: Love Is War, Book of Circus delivers the franchise's signature blend of gothic atmosphere, supernatural action, and sharp wit. The series holds a strong 8.06 rating on MyAnimeList, based on over 230,000 user votes, underscoring its popularity among fans.
Crucially, Book of Circus functions as a prequel to the second season of the original Black Butler anime, providing vital context for Ciel's past and his complex contract with Sebastian. It explores themes of found family and the dark side of entertainment, weaving them into a compelling mystery that keeps viewers engaged from start to finish.
As a complete, bingeable arc, this series directly sets up the events of the subsequent OVA, Black Butler: Book of Murder. Its availability on major streaming platforms now allows both established fans and curious newcomers to explore this pivotal chapter in the Phantomhive saga.