The Katori Chronicles (Books 1-4): A YA Fantasy Series by A.D. Lombardo - Kindle Edition

Link takes you to the series - BOOK 5 IS NOT FREE - so purchase accordingly (use the pull down on the right to choose "first 3" then buy the 4th separately)

From Book 1: Will Kai be able to unlock his potential—and can he handle the risks?

Prince Kai’s life was transformed the moment he witnessed the death of his mother—killed by a dragon in the palace garden right in front of him. After years of sheltered isolation, Kai is desperate to find his way in a changing world. So he sheds his royal detail by venturing out of the confines of Diu city alone.

When two people from his mother’s past come to test him, they discover Kai is more than he should be. The catalyst of bonding with a Nebean black wolf sparks an awakening in Kai—an awakening that should have been impossible. Now they must teach Kai how to control and hide his gifts, at the great risk of exposing their magical civilization to an unfriendly world.

Mentored by his cousin, the newly appointed Master General Cazier, and the spy Riome, Kai must find a way to navigate the challenges of being a teenager, the burdens of being a prince, and the secret of being a Half-Light.