I cant think of the title

I read this book in high school; I think it came out between 2010-2017. The book started with a young boy getting ready to go to an assembly of the town. They had magic, and you could see the magic in the sky. The kids weren't allowed to cross a plain of grass or grain. Then at some point, he was kidnapped and was forced to work for his kidnappers. He then befriends the girl kidnapper, then is taken with them all over the universe. Then, in the end, he returns home.