Despite describing herself as an "ordinary normal school girl," Hifumi is notably very kind and friendly even to strangers to a point of willing to assist them (even going along with their shenanigans without protesting).

Despite her kindness, Hifumi's alternate persona named 'Faust' is a ruthless criminal. She keeps that side of her a secret from her friends.

Voice Reference: Hondo Kaede (https://bluearchive.wiki/wiki/Hifumi/audio)