I think the development of the different characters is the best in almost any work I have ever read.
All the characters are important, even if we know who the main character is, he is only a secondary character in the story of the others. It may sound strange but there are about 5 main characters, each with their own story, adversity, moments of joy etc...
What is equally captivating is how each story is connected and will come together at some point. Each arc is designed for character development and does so in a spectacular way.
The art is the only downside of the work I think, personally I love it but a lot of people can't keep reading supposedly because of the drawings.
Society has a rather strange relationship with traces. They are the only ones who can do anything about the Troubles but they are the outcasts of society, as soon as their skills are discovered, the government takes over their lives, even their existence.
