The Immortals' War
This book can be downloaded and read in iBooks on your Mac or iOS device.
Tong Yi lives in Taiwan and works as a messenger for Huli Transport—a company that specializes in delivering messages and packages for non-humans. He values his oath to the company and makes heroic efforts to ensure the messages entrusted to him arrive safely and on time.
However, between the awesome motorcycle he rides who insists of "dancing" with him by fishtailing and trying to dump him every chance she gets, and the brewing war between the non-humans, "…or die trying" seems more likely with every message he delivers.
And then his brother turns up as a combatant, and possibly his enemy…
If you enjoy Chinese myths and legends woven into a modern story, you'll love "The Immortals' War."