Emma Bronson

The only Mana user in Arzenal and Jill's second in-command, who takes rules very seriously. Like all Mana users, she views Normas as "things" or inhuman, it is suggested that she works for the Rosenblums and that her function isn't just being the island's second-in-command, but also being the island's caretaker where she oversees its overall functions.

(Source: Wikipedia)