Note for those who only know the TV series: Non-chan is from an episode of the OAV series Naisho ( https://majopedia.fandom.com/wiki/The_Seventh_Witch_Apprentice_~Non-chan%27s_Secret~ ) She was a witch fangirl that was in hospital with (apparently) cancer. Doremi befriended her, showed her magic, and got the Queen's approval to make her an actual Witch Apprentice, but she passed away before Doremi could even tell her.