The series was directed by Akiyuki Simbo based on the series composition by Kenichi Kanemaki based on the manga by Koji Kumeta.
In September 2021, we saw them asking if fans would like a limited edition release that would include the extensive liner notes in a physical book.
Nozomi Entertainment previously picked up a new property for release as they announced the acquisition of the Sayonara, Zetsubou-Sensei series back in the summer of 2019.
This, not surprisingly, is slimmed down a bit with a $59.99 price point and is a standard edition only.
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Behind The Scenes: Zoku Sayonara, Zetsubou-sensei Digital Liner Notes