The Nightwalkers: Gideon, English edition

They're called the Nightwalkers - proud, ancient beings who live in the shadows, existing just beyond the human world. But there are also dangerous humans who hunt them - necromancers who use the blackest magic to manipulate them. And for a Demon named Gideon, the battle against these evil forces will soon be all too personal...For a thousand years, Gideon has healed his people.
And as the oldest surviving male of his race, his wisdom has always been respected without question. But Gideon knows that even he is vulnerable to the powerful, primitive desires that befall his kind during Hallowed moons - and nine years ago that truth was hammered home when he found himself claiming Magdalegna, the Demon King's sister, in a wild embrace. Horrified by his lack of control, he left her wanting and furious - and then exiled himself for the better part of a decade.
Now, with necromancers threatening his people - and Magdalegna nearly their victim - Gideon must face another truth. He and thebeautiful, stubborn Magdalegna are destined to be together, to share a love as deep and old as time itself. But first he needs to regain her trust.
Then he'll have to save her life...