Scaling Issue
I can't be the only thinking that Cecilia gets away with too much right? Arthur had to go through rigorous trials in the Relictombs to earn his Realmheart keystone and spend so much time and effort into gaining insight for the Godrune to the point where he could understand the interplay between mana and aether and control both. Now, somehow Cecilia randomly can control aether through dragon mana acquired from Sylvie when the dragons themselves can't control aether.. See what I mean? Cecilia can basically do anything and get away with it under the pretext of being the Legacy. Like if she were just a bit more balanced some of these fights would start making more sense cuz frankly the recent fight was plain stupid. She gets powerups from Turtleme like they're handouts smh...