She used the Endless Magic properly and devoted her life to the smiles and happiness of many people.
She taught Beatrice the Endless Magic, believing that Beatrice would also devote herself to the people, and retired.
Though she was Beatrice's teacher, she was also a magician employed by Beatrice's family.
For that reason, she interacted with Beatrice in a manner fitting for a servant.
Some point to this as the source of Beatrice's arrogance and recklessness.
She used the Endless Magic properly and devoted her life to the smiles and happiness of many people.
She taught Beatrice the Endless Magic, believing that Beatrice would also devote herself to the people, and retired.
Though she was Beatrice's teacher, she was also a magician employed by Beatrice's family. For that reason, she interacted with Beatrice in a manner fitting for a servant. Some point to this as the source of Beatrice's arrogance and recklessness.
Theories
Virgilia is the meta counterpart of Kumasawa
Like with Genji and Ronove, the author has left some very explicit hints to the point that it doesn't even count as deduction.
Leads:
Virgilia transforms out of Kumasawa on her first appearance on the game board, it's hard to argue with that.
She mentions being really old, but she looks quite young in her witch form.
The origin of the endless magic narrative is a kind of folklore passed down in Kumasawa's family. It pre-dates Kinzo's golden witch narrative and it could have been a source of inspiration for him, or maybe the two concepts were separate until they were merged by Sayo, who was raised in part by both of them.
Maria has contributed her imagination and occult hyper fixation, but she didn't come up with the whole thing like we initially theorized. Maybe "gaining endless power" means entering the public consciousness, and the rokkenjima case was instrumental for that to happen with Beatrice.
Leads:
The magical lore fluff in Regarding the Succession of Witches hints at a long lineage of endless witches, but nothing of the sort exists about the golden witch.
Virgilia, aka. Kumasawa is the previous endless witch, but seemingly not a golden witch.
Knowledge of the loops
Every meta character who sees and references events from multiple episodes is somebody who is aware of the Bottled letters that have been found in the future.
This would include:
Sayo as Beatrice, Kanon and Shannon
[REDACTED] as herself
Genji as himself and as Ronove
Kumasawa as Virgilia
Ange (retroactively from the future)
EVA Beatrice (either retroactively or because she was actually present there)
Possibly Nanjo as Gaap (Gaanjo)
We notably can't make this claim about Kinzo and Maria.