Beyond the Rain — Jess Granger

In a universe torn apart by civil war, a warrior and a slave must fight for their freedom, for their lives, and for a love that may destroy them both...

After five years behind enemy lines, Captain Cyani is ready to retire to her home world of Azra as one of the Elite -- the celibate warrior sisterhood that rules the planet. But first she must complete one final mission to rescue her fellow Union soldiers. The last thing she expects to find is a prisoner, chained and beaten -- but radiating feral power and maintaining an unbroken spirit

Soren is one of the Byralen, an enigmatic people who possess a unique hormone that they use to bond with their mates -- and that is sold as a sexual narcotic in the shadow trade. For years, he has endured torture at the hands of his captors as they leeched his very essence. The last thing he expects is to be freed from slavery by a beautiful warrior woman with radiant blue eyes.

Driven by her rigid sense of honor, Cyani risks her life to free Soren. But after so many years of slavery, his hormones are so unbalanced that he will die if he does not bond with a woman. Can Cyani be the woman he needs to survive, or will this forbidden bond destroy them?