Sword of the Gods: Agents of Ki by Anna Erishkigal

At the dawn of time, two ancient adversaries battled for control of Earth. One man rose to stand at humanity's side. A soldier whose name we still remember today… Cut down by an act of betrayal, Mikhail lingers between life and death while his fragile alliance crumbles against the onslaught of a Sata'anic invasion. Fearful the intrepid Angelic might lose hope and die, his young protégé concocts a plan to fool him into thinking his wife is at his side. Meanwhile, held captive by the Evil One, Ninsianna must choose between loyalty to her fallen husband and manipulating the Evil One's minions to turn against him. As darkness tears the heavens asunder, a tiny Mesopotamian village finds itself the epicenter of an intergalactic war between good and evil. But all is not lost. An ancient goddess has recruited two 'Watchmen' to turn darkness back into the light; mortal creatures who do not realize they are pawns. The saga of the greatest superhero to ever walk the Earth continues in Agents of Ki…