Trivia’s existence is curious. She was plucked from the sea of souls who weren’t born into the world, and only so that she could unknowingly be the harbinger of Ainriail, a sort of lesser Discord. But when Ainriail was defeated by Innocent Sun, Trivia was severed from the chaos-spirit, and gained independence, choosing to live for herself, even though she knows she will have to suffer as every person does.
…Oh, and also, she possesses an inexplicably gigantic appetite. That might possibly be a leftover part of Ainriail being a part of her, but no one really cares to find out the answer. As far as anyone’s concerned, it’s just a cute quirk of hers.