Does Black Butler have other OVAs or seasons? I have watched a lot of Black Butler. Other than seasons 1, 2, and 3 ---I'm not sure if there's a season 3--- and Book of Murder and Book of Circus, I can't find anything else.

Am I missing something?
What you have listed are the only animations with:


Season 1 containing 24 episodes and 1 OVA
Season 2 containing 12 episodes and 6 OVA's
Book of Circus containing 10 episodes
Book of Murder as 2 OVA's.


Ref: List of Black Butler Episodes.