THE CHARACTERS
Since it's only the beginning, I'm having a hard time figuring out the characters, I'd need more details, but for that I'll have to keep following the chapter publications. From what I've read, I think there will be a lot of characters with whom we could recognize ourselves in them, giving the book a very personal touch, which is an amazing thing.
THE UNIVERS
The concept of reversing the cycle of life is an idea that one might find weird, but I think it's great, in the sense that the reader, or personally, it took me out of my comfort zone and I really enjoyed it. It's something rare, I've never read a book that used this process, and I don't know where you got the idea, but I would call it genius and it fascinated me throughout the chapters. When we read a book, no matter what genre, we are looking to escape, to travel intellectually and to use our imagination, this book fulfills all three of those goals. We can see where you are going with your story, each chapter makes sense and completes each other.
THE WRITING STYLE
The vocabulary used can sometimes be difficult to understand, if, as in my case, English is not our native language. However, the story is precise enough to guess the meaning of complex words. Everything is in the right places. By that I mean there is neither too much nor too little. The length of the chapters combined with the vocabulary makes the whole thing fluid and homogeneous. It is a pleasure to read your story.