Azan by Penny Rose

Azan has always been the voice of caution and reason for his pride of lion shifters. As second in command, he has not taken a mate, waiting for someone to challenge not only physically, but mentally. When he helps the injured human Jane recover from a nasty fall, the sparks between them have him questioning his place in the world.
As a research biologist, Jane has spent her life traveling from planet to planet. Her work brings her peace and purpose in an otherwise chaotic universe. With no time for love, she’s not even sure what she desires from a partner. Things change fast when she meets Azan, who is kinder and more generous than she expected the brute of a lion to be. His touch sets her on fire, forcing her to face her greatest fear: her own emotions.
As the two grow closer, tensions arise on both sides as Azan’s pride anticipates an invasion while the researchers fear for their safety. Will the star-crossed lovers find a way to bring peace to the two sides or is bloodshed all that remains?