It tells about the past of the three servants and what they used to be and how they got to be in the Phantomhive mansion, working for Ceil, their 12-year-old master...
Pluto first appears in episode 7.
It already did.
isn't it called kuroshitsuji in the anime?
Kuroshitsuji Season 2, Episode 8; Divulging Butler.
Ciel in Wonderland is the Ciel in Wonderland OVA, it has no episode number; but it does have two parts.
Until 9/21/10, there have only been 21 episodes of glee
Episode 16 (the end of the Curry Arc) is where the first season of the show deviates from the manga. The following episodes of season one do not take place in the manga. You can find the story continuing from the manga in Kuroshitsuji: Book of Circus, the third season.
Drossel is from the anime Kuroshitsuji (Black Butler). He is an anime original character that first appeared in episode 10.
In the last episode Ciel allows Sebastian to eat his soul, and thus dies.
Kuroshitsuji was created by Yana Toboso.
Si Deus Me Relinquent, or "If God Has Forsaken Me".
Sadly, there isn't a Kuroshitsuji (Black Butler) Episode on the Noah's Arc Circus. The circus appears in the manga and manga only (For now I hope!)