Overview
An anime work that has no original work and is newly produced independently.
There is a person in charge of the character draft, and the characters are created based on that, and the script does not follow the original, so it has to be written from a blank slate.
On pixiv, it functions as a parent article for original anime where there is no article about the animation production company or no article about the production staff, but in cases of joint production, when there is a parent article from one production company. Since it belongs to there, it does not exist in this parent article.
The above case applies to Princess Principal (belonging to Actus, one of the co-producers), which was not produced by the other studio in the past, and later Encyclopedia of the other production company was created. An example of this is Aldnoah Zero (currently affiliated with TROYCA).