This is a licensed sticker set of main characters from the anime's 3rd season, Black Butler: Book Of Circus (BOC).

The stickers are of Ciel Phantomhive, Charles Grey, Sebastian carrying Ciel, Sebastian Michaelis, and Joker.

Collectible, cool, and a fun way to share their fandom, this sticker set would make the perfect gift for any "Black Butler" fans.