If you're looking for anime similar to Black Butler: Book of Circus, you might like these titles.
Nai’s friend Karoku is missing, and the only clue to his disappearance is a mysterious bracelet. One day while travelling, a young thief named Gareki saves Nai from a monster and takes an immediate interest in the trinket he carries, as it is the insignia of Circus, an elite group who travels the world capturing notorious criminals. Together, the two decide to track down Circus and see if they’ve taken Karoku, but luckily, the group finds them first. Unfortunately, they have no idea who Karoku is or why he had one of their identity bracelets, but in the hopes of getting to the bottom of the matter they offer their assistance. Now, Nai, Gareki and their new friends set forth to find Karoku, but with more questions piling up each day will it be possible to achieve their goal?
2 votes
The settings for the two animes seem to be very similar. Ciel has Sebasian and Nai has Garuki. Plus, both of them has a circus feel within the anime. Both are action and adventure and have dark pasts.
It features the mystery, horror, thriller, detective kind of genres you might be looking for that is similar to Black Butler: Book of Circus you've watched. I totally recommend watching this and I guarantee that you"ll like it! Enjoy!
William Twining lives a charmed and privileged life. As a rich nobleman from a prestigious house, he trusts his superior intellect and strictly-scientific mind will help him sail through school with ease - but what he didn’t anticipate was returning home to discover his family went broke and moved out, leaving him penniless! Desperate to find something left of value, he finds a secret room in the basement, accidentally summoning Dantalion, Grand Duke of the 36 Armies of Hell in the process! All William wants is to be left alone to his studies, but he’s now tasked with deciding who the next ruler of Hell will be, much to his annoyance. With Dantalion and other demons eager to influence his choice by whatever means necessary, what’s a nobleman to do?
1 vote
Both series feature young british nobles and how their lives are changed forever when demons and other supernatural entities become a part of their everyday.
26 years ago, something terrible happened in a middle school’s third year classroom. A popular, talented student named Misaki suddenly died, and the ramifications of that incident have caused each third year class since then to live in fear. It is now 1998, and Kouichi Sakakibara has just transferred into the notorious classroom, curious about the mysterious secret that his peers are hiding from him. He’s drawn to one enigmatic girl named Mei Misaki, a quiet student who wears an eye patch and warns him about getting involved with her, and continues to seek her out against the pleas of his classmates. And that’s when people begin to violently die...
Both animes are dark and supernatural. They have killing and demonic\spiritual themes. I think you will enjoy either one if you like the other, I know I did.
Hayate, Nagi and the rest continue to live in their inferior mansion together, and madness abounds as usual. The Sanzen'in servant's random endeavors and the gang's chaotic situations seem to be without end! From taking care of the sick residents during exam time while being careful not to get the flu in the process, to attempting to keep safe a briefcase filled with a nonsensical amount of cash, there's always hyperactive moments in the life of a butler and each of his cute, female companions!
It’s business as usual at the Sanzenin Manor until a phone call from the Las Vegas police brings some startling news— they have something belonging to Nagi’s late father, and she’ll need to come retrieve it personally! Adding to the chaos is the arrival of a strange girl with a hidden agenda named Ruri, who claims to be Hayate’s sister. The secrets of the Sanzenin family will finally be brought to light when Nagi discovers the existence of a mysterious item that once belonged to her mother.
Throughout the ages, fairy doctors served as liaisons between humans and fairies; but in the present time of the 19th century, fairies are nothing more than an old wives' tale. Nineteen-year-old Lydia Carlton is one of the only remaining fairy doctors and enjoys a quiet life in the countryside of England - that is, until the dashing Edgar, for mysterious reasons, whisks her away on a daring adventure. Said to be the descendent of the earl of the fairy nation, Edgar desires the noble sword of the merrow that serves as proof to his lineage. Though his motives and origins are questionable, Lydia now sets forth to help Edgar on his quest.
In the late 19th century, the British Empire nobility reigns while its working class suffers at their hands. Sympathetic to their plight, William James Moriarty wants to topple it all. Frustrated by the systemic inequity, Moriarty strategizes to fix the entire nation. Not even consulting detective Sherlock Holmes can stand in his way. It's time for crime to revolutionize the world!