If Hilda and Ao where to make a contact. Would that not make them the most powerful female group in the series. Pluus that would be awesome. Also I wonder who gave Aiba demon powers this time...What if Chiyo was a Demon princess from another Demon King & Queen as I think there is more then one Demon King and Queen in the underworld then we know. For all we know that Sword guy who stop Beel when he was super size underworld could be tied with that King&Queen.
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