Chains of Blood (The Chaos Cycle #1) by M.L. Spencer

SPFBO6

He thought he was born Rylan Marshall…until he found out he wasn’t. He was born the son of a demon. Does that mean he is destined to follow in his father’s footsteps? Rylan was attacked, his young son murdered, his baby daughter taken. But his assailant left him with two gifts: the gift of magic…and an oath to darkness. Rylan blamed himself, even though he knew it wasn’t his fault. The life he knew was over. And war is coming. A new enemy, stronger and more fearsome than any other, appears out of the night. Will Rylan use his newfound power to make a stand? Will he learn its use in time to make a difference? Or will his oath to darkness guide him to the enemy? If you love grimdark fantasy filled with vivid realism, brutal warfare, and raw emotion, this new adventure is just for you.

Dragon Mage by ML Spencer

SPFBO7

Aram Raythe has the power to challenge the gods. He just doesn't know it yet. Aram thinks he's nothing but a misfit from a small fishing village in a dark corner of the world. As far as Aram knows, he has nothing, with hardly a possession to his name other than a desire to make friends and be accepted by those around him, which is something he's never known. But Aram is more. Much, much more. Unknown to him, Aram bears within him a gift so old and rare that many people would kill him for it, and there are others who would twist him to use for their own sinister purposes. These magics are so potent that Aram earns a place at an academy for warrior mages training to earn for themselves the greatest place of honor among the armies of men: dragon riders. Aram will have to fight for respect by becoming not just a dragon rider, but a Champion, the caliber of mage that hasn't existed in the world for hundreds of years. And the land needs a Champion. Because when a dark god out of ancient myth arises to threaten the world of magic, it is Aram the world will turn to in its hour of need.