A Guardian, who never die.

A warrior worth more than army, a sword that no man can wield, a shield that no weapon can cross, a weapon that brings nothing but destruction, a man with no soul, a child taken birth from darkness and light, something the angels hate and the demons fear. a man who lived a thousand years and will live thousands of years more. but he lives as a slave. a slave no gold can buy, no one can rule, no man can break, a guardian.
"read the story of this man, diayan, his wars and his love, read why he is slave and how is that possible in this book and the next after."