Well, I would say this is quite well done. It has quite the impact for a first chapter. Now let us get down to the criticizing.
Pros:
1) Good pacing: The story had good pacing from start to finish of Chapter 1. It flows well and I like the way it went.
2) Original: I like how you made a whole new world for your story. I'm not sure what the whole setting is supposed to be but at least you've piqued my interest. I'll make sure to check up on updates.
Cons:
1) Apostrophes and spelling in general: Okay... I'm really annoyed about this one. Too many apostrophes mistake. Here's an example:
General Griffin looked at them and smiled warmly; "nicely done Seras. Ciel saw the hint of affection in his eyes.
And another....
"What are you doing here? Seras shouted angrily!" "Go! Hide!" he screamed at him pushing him away. “I can’t leave you here! Ciel said.
Spelling wasn't bad actually, I found a few minor mistakes but that was it.
2) Descriptive: Descriptions were rich but I think this could be improved further. Maybe you should describe in more detail about the main character. The only thing I know is that he's a kid, no physical description at all.