I really hope they offer some kind of back story for this cause a link between Eldora and Earth that's seems to have existed since ancient times, it feels like something like that is connected to whoever Alus was talking about in episode 11.
My head is starting to hurt.
-=Edit=-
Alright I was looking at the opening and I noticed something, Hiroto might wind up with a 9th Armor for the Core Gundam II formed from the Dragon of light from both openings, my reasoning?
This:
Doesn't seem like much unless you see the dragon of light shown here:
Bait or the Core Gundam's Eldora Gundam form?