Age of Ascension: The First

Age of Ascension. 
This is a story of a reincarnated person in alternative world.
Earth, or what I should call Sector 77 now, was a beautiful blue planet inhabited by humans. 
But the blue planet is no more. 
The planet's size has expanded ten times, and a powerful magical barrier surrounds us like a cage. To make it even worse, we got trapped in this cage with aggressive alien races that invaded us. 
Although we have so many conflicts and hate among ourselves, we didn't expect a higher power to befall us one day. A power that made humans united against a common enemy, the Syluman. 
I, Theomars Adam Gates, will thread a path for humanity!
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Hello, This is Nine_Clouds!
This story is my first original novel. I'm still experimenting with it, so please give me your support and comments about the story.
English is not my first language but I guaranteed that the story is readable.