Fantasy
War Demons by Russell Newquist
Lots of soldiers have demons, but Michael’s follow him back home. And now a secret order of demon-slayers tell him he has to save the world?!
Arrow in Flight by Jane Lebak
If you want a gorgeous read delving into the world of angels that reflects actual accepted beliefs about them then this is the book for you.
Shadowmancer by G.P. Taylor
A dark fantasy along the lines of Revelation itself.