Witch of Origins
Maria's title, expanded upon in Regarding Creators and Maria#Alliance#Tea Party
Maria often exhibits neurodivergent traits. This could be a justification for her extremely fervid imagination.
Beatrice needed someone like Maria to expand her magical compendium. She is the one who populates the endless witch narrative with all sorts of quirky characters, from furniture to demons.
Sakutarou is the most obvious case, but another prime example are the Chiester Sisters Imperial Guard Corps, who are said to belong to Beatrice but actually originate from Maria.
The Chiester sisters come from the rabbit toys that Rosa bought for Maria. The whole imperial guards lore is something she came up with.
Chiester 556 is described as having been killed by the Black Witch, associated with Rosa, and there is a scene where Rosa destroys the rabbit holding the trumpet.
