>>123392101It's based on the belief of the "Giver" who gave devil kind their grotesque features. According to the series notes, since Demon's have the all of the attributes listed in the myth(wings, tail, claws, sharp teeth, bright eyes), they see themselves as the monster master race and act accordingly, ignoring/destroying anything that contradicts it. Pandora has made herself a contradiction.
They're okay with Kaiko because she mutilated herself to become more Demon like. She accepts the superiority of the Demon race.
