I've just finish watching the series and there's some things I don't get.
-Why did Aya's Cousin (sorry forgot his name) experiment with the celestial beings?
-Where did the celestial beings come from?
-Why did some of the celestial beings die after a while?
-What was the "C-project" about in detail?
-Why did they want to restore the celestial robe?
And if anyone could please give an overview of the entire series that would be nice cause it might help me understand this series better. Thanks!