First of all, I like your writing style. Your English is very fluent, which I find professional and at the same time popular with the masses. It has the same vibe as those books that are published as physical copies. The only problem is that, when writing the dialogue parts, it became confusing, especially on the latter chapters. It is an important part in writing narrative stories to put a dialogue tag to make it easier for the reader to know who was speaking. Although I advice not to put it on every dialogue.
I can't give a perfect score for updating stability because this was just a newly published book that is free to read so we, the readers, don't have the right to obligate the author to update regularly. I, myself, am an author so I can relate to you in this regard.
I gave three stars for the story development for the same reason. This was just the beginning and you only have a few prepared chapters, but despite that, there were already some developments in the timeline, although they weren't that big. A key development was already provided, which is why it's got a three-star rating.
What I commend the most in your story is how you build your character. It was just the beginning but there are many important details about the character and how he might have grown as the story developed further.
Lastly, the way you built the world background was fascinating, in my opinion. You didn't give everything in one go but it didn't lack details either. Just enough information about the world was provided that gives the basic details and also provides bait for the readers to read more to know the world more. Maybe the little problem is how you narrated it so others might find it confusing.
Overall, this book is good. It has a nice touch, although not unique in terms of genre or the chosen trope but it's own way of interpretation, so its better. And it'll be greater if the author is able to maintain the mentioned advantages and apply the disadvantages I have provided. Just be consistent in your chosen writing styles and follow through on your story plot. Good job!