I'm not sure if it was said in the Japanese version and the translation changed it in the English one, but is it SUPPOSED to be implied Aegina and Luciana are related to Yggdra? Possibly even triplets, because if you look hard enough, they look practically identical?
i think that they should have to go a lil deeper in that part of the story, related to why were the twins with gulcasa n such, i felt like that part -and some others- were 2 rushed as if they missed some details on purpose