The Savage God by Eliza Raine

In order to save my only friend’s life, I am being forced to complete three Trials set by the Lords of War; Pain, Panic and Terror. And I have to work with the most arrogant, stubborn, untrustworthy jerk in Olympus to do so. Ares not only won’t teach me how to use my powers, he also keeps trying to steal them. And he’s crossed a line that should be unforgivable.

Something connects me to the brutish God of War though. Something more real than I’ve ever experienced in my life. There’s more to him than he shows the world, and the more I fight alongside him, the deeper into his soul I can see. Which makes the betryal so much worse.
He and my sphinx-shifter cat know more about who I am and where I came from than they’re telling me. And in order to stay in the world of Olympus, a place where anything is possible and I’m no longer an outcast, I need to be able to use my magic.

For all my determination to save Joshua and learn to use my powers, an equal part of me needs to understand Ares. It’s a part of me I simply can’t seem to switch off. I need to know why I hear the drums of war when I look into his eyes, and why flames dance in his irises and my body utterly betrays me when he’s near. And even more, I need to know if he feels the same.