Shadows Upon Time: The Sun Eater: Book Seven

The seventh and final novel in Christopher Ruocchio's galaxy-spanning series combines space opera and epic fantasy. After his victory at Vorgossos, Hadrian Marlowe becomes a fugitive, hunted by both the Extrasolarians and the Sollan Empire he betrayed. He takes refuge beyond human space, waiting for the Jaddian Prince Kaim-Olorin du Otranto, his last remaining ally. Meanwhile, the inhuman Cielcin have disappeared for over a century. Human armies have grown complacent, but Hadrian knows the truth: the Cielcin are gathering strength for a final assault on humanity's heart. Only Hadrian possesses the power to stop them—an ancient war machine called the Demiurge, forged by the daimon machines at the dawn of time. He must now face the Cielcin horde, their Prophet-King, and the dark gods they serve, entities that shaped the universe itself.