[spoiler]I am not sure if I read it right, but Aura dies and is reborn at the end of Quarantine, correct?[/spoiler] Wouldn't that have permanently stopped her from "growing", since she's finally fulfilling her role?
I don't think so. Remember, while Tsukasa is all depressed and sad Aura is getting eaten away. But once Bear and the others tell him to think differently (something like "Don't tell us how you feel...tell us how you WANT to feel"), Aura starts filling back up again. It's the episode where ...