A dynamic, cinematic cover image depicting the confrontation between Heaven and Hell. Center stage, Xrès, a stunning goddess with long, flowing blonde hair, black wings, and piercing eyes, stands defiantly amidst a fiery hellscape with black mountains and an inferno raging behind her. She's clad in dark, elegant clothing, radiating power and sensuality. To her right, Kael Thorne, a formidable warrior with long black hair and a beard, wielding elemental powers. Behind them, a horde of demonic figures, including Zvarath, a towering red demon with black horns. In the background, partially obscured by swirling smoke and flames, a glimpse of Heaven: a celestial city bathed in ethereal light. An angelic figure with golden wings and white clothes, representing the God of Gods, is visible amidst the ethereal glow of heaven, staring down at Xrès. The image should evoke a sense of epic scale, conflict, and dark fantasy, highlighting the struggle between chaos and order. The composition is dramatic, with a low-angle perspective to emphasize the power of Xrès and the impending battle. Use a color palette of deep reds, oranges, and blacks for Hell, contrasting with the bright blues and golds of Heaven, enhancing the contrast between the two realms. The overall mood should be dark, foreboding, and seductive, reflecting the dark romance aspect of the story.