A bit more from the Japanese site from what I can make out from basic translation, people in the game live in settlements that are on of two things in the game the first are called Iron Giants (translated) which colonies are built into the other are like Titans essentially the translation says Protist which means a creature that is neither an animal, plant or fungi.
A key detail I've noticed from the artwork of the six main characters is that two of the three from the side who utilize Ether have blade cores or what appear to be cores indicating their people might be blades or maybe like certain characters in XBC2 especially one in particular who has a twist behind them, it's likely the third character has one as well that his attire covers it would explain their ether abilities like the third character's origami like attacks.
On another note Noah's weapon looks to be the Aegis Blade and Monado combined which if it is it will have some insane abilities considering what those weapons did as separate entities.
