Interest Stacks

Original anime series. It follows the basic plot of the manga up until ~episode 15, but with some filler included. After that, you are in anime-only territory, much like the original Fullmetal Alchemist.

aka episode 13.5
purely Recap

Bonus episode for Season 1, basically
The cast performs Hamlet! Funny, and also thematic

Drama CD, I remember finding a translation on YouTube

Sequel series to Season 1, and we are now FULLY into anime-only continuity.

Bonus episodes for Season 2

Season 1's bonus episode was just the cast performing Hamlet, which is already fun enough, but these OVAs actually have some bangers

-2-Part Wonderland Parody
-Behind-the-Scenes spoof
-Reapers Backstory
-PoV audience insert special

Actually some of the most fun content for this series, imo

If you tilt your head and squint your eyes, you can KINDA justify this and the anime after it being in continuity with the middle of season one...?

But at this point, in reality, we actually stopped with the anime-only continuity and just started adapting the manga arc by arc, so we never need to think about Black Butler II or the latter half of Season 1 ever again.

This is a direct sequel to Book of Circus

This is a direct sequel to Book of Murder

This is a direct sequel to Book of the Atlantic

This is a direct sequel to the Public School Arc