Fated to the Drakarn Commander (Drakarn Mates #4) by Kate Rudolph

Drakarn warrior, deadly enforcer, feared mentor, and shield to the weak in a world of molten rock and razor-sharp wings, this is what I am. I never waver…until she crashes into my fortress and demolishes every ironclad rule I’ve ever held.
Hawk is human: smaller than my kind, yet braver than any warrior I’ve ever known. From the instant her scent sears my senses, I know two truths: she is mine, and I will break worlds to protect her.
But forging a bond with an alien female inflames ancient grudges and council politics—each side eager to shred our alliance before it blooms. And when enemy forces appear demanding human blood, there are those in Scalvaris eager to give her up.
They call me ruthless for locking her in my private quarters, for guarding her every step, but she’s too precious to lose.
Rival clans plot war, temple priests preach doom, and eagle-eyed enemies circle for the kill. I’ll face them all—wings flared, claws bared—to keep her safe.

A Drakarn’s mate isn’t a choice. She’s fate. And a Drakarn warrior never surrenders what belongs to him.