Matharu, Taran. Soulbound saga #1

"Jai lives as a royal hostage in the Sabine Court--ever since his father Rohan, leader of the Steppefolk, led a failed rebellion and was executed by the very emperor Jai now serves. When the emperor's son and heir is betrothed to Princess Erica of the neighboring Dansk Kingdom, she brings with her a dowry: dragons. Endemic to the northern nation, these powerful beasts come in several forms, but mystery surrounds them. Only Dansk royalty know the secret to soulbonding with these dangerous beasts to draw on their power and strength. This marriage--and the alliance that forms--will change that forever. But conspirators lurk in the shadows, and soon the Sabine Court is in chaos. With his life in danger, Jai uses the opportunity to escape with the Dansk handmaiden, Frida, and a stolen hatchling. Hunted at every turn, he must learn to cultivate magic and become a soulbound warrior if he has any chance of finding safety, seizing his destiny...and seeking his revenge."--Amazon