She's Ernesti's friend and Chid's twin sister. Pretty much the opposite of her brother personality-wise—where Chid goes for raw power, she's all about finesse and intrinsic control. She's got serious skill in combat, just a different approach.
Cheerful and energetic, she's the type who loves cute things and isn't shy about showing affection. She's completely head over heels for Eru, though she doesn't really realize it herself. It's pretty endearing, honestly—she hugs him pretty much every day and clearly adores him. The fact that she doesn't seem aware of her own feelings just makes it funnier to watch.
Content compiled by AnimeList.moe from publicly available sources.