The Destroyer Series by Michael-Scott Earle

After untold centuries of absence, the evil Ancients have returned. Their magic appears unstoppable and their hunger for conquest is insatiable. To protect the country of Nia, Duchess Nadea and Scholar Paug make a desperate journey to find a human legend: A man known to have destroyed these Ancient foes with a powerful army. But legends can lie. When Paug and Nadea revive their hero from sleep, his virtue is far from clear. Is he really their Savior or their Destroyer?

The country of Nia has fallen to the Ancients and circumstances are grim for the humans.Kaiyer must return to the broken castle to save his friends, reconcile his past, and find a way to break the hold that the enemy agents have over the country.

Jessmei thought she had escaped. But the Elvens know that her protector is gone. They will not rest until she has been found, captured, and made to serve their agenda. Can the beautiful princess navigate this political web and restore her kingdom?

The Empress almost has control of the world she was promised and soon her enemies will not be able to thwart her. There is just one man keeping her from her prize: Kaiyer.