I'm hurriedly playing the second act of "Destruction" Chapter. Sarly, a genius girl, appears in this act, and the core of this story is slowly revealed. I think my tweet will contain more spoilers than ever because this is my second play. Please beware.
Sarly:
Because your existence, the fact you exist here itself, is destroying the world.
まずはもちろん、イオンが別の世界から連れてこられた存在であること。そして、レオンOSも実は同じような生きた人間であるらしいこと。今のイオンは、まだ元の世界の記憶を思い出せないので、あまり実感はわかないようです。
First of all, Ion came from another different world, of course. Moreover, REON OS was also a similar kind of living person. The present Ion is not able to remember the memory of where she came from, so she does not seem to realize the fact yet.
Ion:
I guess...I was not a person of Ra Ciela from the beginning...
そして、キーとなるイオンの特殊能力・俯瞰視点。これは素直に本編中の用語解説を読んでもらうほうがいいでしょう。私個人は前から次元や平行世界の仕組みに興味があったので、この概念はよく理解できました。
And Ion's special ability, Bird's-Eye Viewpoint which is a key of this story. I think it's better to let you read the glossary within the story about this term. I could understand this concept well since I personally had been interested in theories of dimensions and parallel world.
Bird's-Eye Viewpoint
It is an ability to look three dimensional space, for example, from outside of the space.When a dimension to be looked is assumed as n, one needs to be (n+1) dimensional existence to overlook the n th dimension.For instance, when a person living in two dimensional space is getting lost in a maze, another person in three dimensional space can easily lead him to the exit.In real case, with a factor of distance, a person in three dimensional space is not completely able to understand everything in a huge two dimensional space. Still, he can get much more information than a person in two dimensional space does. In Manjusara, the reason why Ion could weave the Song Magic to prevent the wave burst without any calculation was that she used this Bird's-Eye Viewpoint to do all of them solely by her sense.
However, Ion rather stays outside of the main plot in Act Two. The fact that Nay was connected with Zill was exposed to friends; She decided to fight against Zill to help Sarly, suffering from an incurable disease, and Turbo who was taken over by Nelo (= REON). I almost fall in love with her brave spirit!
Nay:
You have trusted me.
Therefore, I'm gonna repay you by my own way.
You have trusted me.
Therefore, I'm gonna repay you by my own way.