Flight of the Maita Book Seventeen: Changes

More a fantasy than SciFi. Kene, son of net (Book five: Now You See It/Now You Don't) decides to study sorcery. He is a good person, but can a good person know the dark arts and remain good? He learns the crafts and starts to rid the kingdom of evil sorcerers. He becomes Wizard of the Realm. His closest friends are demons. He adventures with his demon friends all over the world. He changes a few things, hopefully for the better.