This is a wonderful book.In this book,the author was imagining a world that is similar to our world but different from ours.  In this world, every human has a daemon. They are linked together and cannot be separated easily. And when they are separated, a huge surge of energy would appear. And it may be able to link two  Worlds together. That's what makes this book so interesting and wonderful to read.  I just couldn't put it down. When I start to read, I can read hours on end and not at the same time is passing at all.

 But sometimes I think, what is this book really about? I think this book is about courage and curiosity. 

And I also thought that was one thing else about this book that amazes me. In modern physics, there were a theory that seems to many, many worlds. Each possible world was existing somewhere outside our world. Or you could say, outside our universe, this book seems to be imagining something just like that. Many different worlds!  In the book, it explained how those words were made. Doing something like tossing a coin, which has different possibilities, makes two words or more appear with each possibility occurring in one world. That's so fascinating! It appears that this book can be linked not only imaginary things, but modern physics, which is science.

Well, after this, do you want to read this book?