If you liked
Kuroshitsuji
|
...then you might like
Vanitas no Karte
|
Both are mangas with historical setting and have a similar art style. Both share a focus on supernatural beings (vampires/demons/shinigami) and fantasy, though Kuroshitsuji is more dark.
If you liked
Pandora Hearts
|
...then you might like
Karneval
|
Karneval and Pandora Hearts have a similar art style, and though their setting is far of being similar (Pandora Hearts sets on an historical world while Karneval focus on a modern world and sci-fi) both have Organizations (Circus/Pandora) which fight against monsters and possessed people (Chains/Varuga), and both have characters which have a hidden dark past and suffer of memory loss.
If you liked
Shaman King
|
...then you might like
Magi: The Labyrinth of Magic
|
Here we have two series where we see the use of fantastic/supernatural elements on weapons. Also we follow an amazing crew of characters you'll get easily attached during lots of adventures with funny moments where they'll get stronger and learn to use their powers. There is amazing villians too.