Kazane Kagari

Kazane is the head of the school. She is Ayaka's mother. She is also the head of the workshop witches in her area where she establishes her workshop in her school.

Apparently, she and Chronoire, knew each other for a long time and it was even hinted that they haven't spoken to each other for 130 years which suggest that both she and the latter have been alive for a couple of hundred years since the crusade.