Vanquished Gods by C.N. Crawford

All I wanted was a simple life in my cozy forest cottage, hiding out from the witch finders. So when a vampire appears to disrupt my peace, I kill him instantly. Unfortunately, I learn he was the best friend of Sion–the vampire king.
Sion, unaware of what I did, shows up next. The dangerously seductive vampire wants to harness my death powers to fight the Order. And with the witch-hunters closing in, I have no choice but to join him. He promises to help me master my death-touch, and though he’s a bloodthirsty killer, his dark allure is frustratingly irresistible.
Together, we must bring down the Order’s reign of terror in the kingdom of Merthyn. If we fail, every last witch sanctuary will be destroyed, and I’ll burn at the stake. In battle, the line between desire and danger blurs, and our connection might be our only hope for survival.