Starkweather Immortal

Today, witches are hunted at every turn. The Twelve Great Houses have
collapsed under betrayal and infighting; they have abandoned their charges,
forsaking the very source of their gifts. They teeter on the brink of extinction
and their best chance at survival - a five-year-old boy with enough power
to topple mountains - disappeared 15 years ago. That boy has become a man
who doesn't remember what he was. The very spell that was woven to hide
him from the world also has hidden his true self, leaving him a directionless
disappointment who wants nothing more than to spend his life in wonderful
obscurity. It is Alexander Starkweather's destiny to restore the Divine
Blood to power and lead them into a new age. But before he can become a witch,
he must learn what it means to be a man.

Collects and completes the Starkweather: Immortal series.