The Duelist Series by Eric Vall

Alex and his crew continue their journey to Terr Island, but the sea isn’t the last obstacle they have to face. Once they land, it’s an uphill battle against the island to reach Terr’s capital, and even when they reach the city, trouble abounds. If Alex doesn’t do something, the island of Terr is in danger of being destroyed by the Red Sun demons, or worse, by civil war.

The island of Terr is on the brink of civil war and destruction, so Alex will need to use every one of his “Ambassador” skills to keep that from happening. But Terr has dwelled in darkness for too long, and monsters threaten to destroy the Terran people from within and without.

Alex and his family finish their business on Terr and leave the island better than they found it. But they can’t go home yet. Amaya’s fate as the Prophetess looms ever closer, but Alex comes to suspect the oryx-woman may not be what, or rather who, the Order thinks she is. To find answers, they plan to travel to Eng Isle, but Alex keeps having these dreams. And it sounds like someone beautiful is calling for his help.