A dark anime masterpiece of a powerful Demon King and Dragon Lord. He is the Supreme Author, standing majestically with an elite black spiked armor, a tattered cape, and sharp dragon-like features. His body glows with an intense cosmic energy. In his right hand, a massive dark purple vortex and a swirling black hole rip through space and time behind him. Two massive, ancient dragon heads rest defeated at his feet, with a dark sword pierced into the ground next to them. The atmosphere is filled with pure dominance, destructive purple lightning, and overwhelming shadow aura. Extremely detailed, epic composition, raw god-like power.