Rey Demonio Inmortal y Su Ángel

The captivating realistic cover of "Immortal Demon King and His Angel" features a close-up of a slender man with pale gray skin and long white hair. He smirks confidently, his dark obsidian eyes gleaming with arrogance. He is shirtless under an open jacket, revealing a toned torso adorned with rhombuses, and wears tight black pants with a yellow sash. His hand rests on his chest in a seductive pose, and dramatic lighting emphasizes his features. The background is a dark, smoky abyss filled with rhombuses. The title, "Immortal Demon King and His Angel," is emblazoned across the top in a bold, stylized font with sharp edges, reflecting the man's demonic nature.