The Book Of Azrael -

An immortal bred for battle, burdened by honor, and haunted by a past he can’t outrun. He despises everything Dianna stands for. She is chaos. He is order. Their first meeting ends with a crater where a city used to be.

They are each other’s worst enemy. They may be each other’s only salvation. The Book of Azrael

Then she is ordered to retrieve an ancient, forbidden artifact known as… the Book of Azrael. An immortal bred for battle, burdened by honor,

But when an even darker power rises—one that threatens gods, monsters, and mortals alike—they are forced into an impossible alliance. An immortal bred for battle