Lightning Tracks - Song Gate, #1

Nick isn't a warrior. He knows some basic karate, but that's it. So when an assassin turns up to settle a blood debt, Nick narrowly escapes with his life. In his haste, he unwittingly flees to Korelios, a place he thought existed only in his eccentric aunt's ancient legends. All too soon, he finds himself caught in the middle of a war, and he must make an impossible choice: do his duty or follow his heart.
His choice will decide the fate of an entire civilisation.