My Kingdom Come book 1: The Saints We See

Book one of the My Kingdom Come series. Two boys born worlds away from each other: Mik, a slave who was born free and Hathu, a prison guard’s son. Society demands that Mik give up his free will to serve his betters, it also insists that Hathu was born to rise up and dominate every species weaker than his. Will they give in to the pressure, or will they replace a way to live on their own terms?