A Toiling Darkness — Jaliza A. Burwell

No one knows Darkness was once the most feared being in the world since the dawn of mankind. No one knows she once went by Akhlys and nearly destroyed the world, and she's fine with that. Darkness gets to be alone. At least until she meets Kalen on a rooftop. Meeting him causes her past to clash with her present, and she can only hope it doesn't end her future.

Someone wants Darkness dead. Dead enough to risk summoning a slauve. Too bad that very slauve is Kalen. Now Darkness has to find the slauve's master before they realize she is no longer who she was two hundred years ago. Or even thousands of years ago.

Darkness races against time while keeping tabs on the slauve who hunts her and searching for his master who wants her dead. Along the way, she learns she shouldn't let the past dictate her future. And maybe, just maybe, doing something for someone else isn't so bad. It really doesn't help that Kalen is truly a good guy. How is she supposed to kill a guy she actually likes?