A breathtaking 8k ultra-realistic depiction of a samurai warrior standing tall, adorned in intricately detailed black and gold armor with subtle red accents. The warrior grips a majestic, flowing yellow war flag banner. The scene is lit with cinematic lighting that casts a dramatic glow across the reflective surfaces of the armor, showcasing vibrant illumination and hyperrealistic detail. The environment is a war-ravaged landscape bathed in a reddish hue, with swirling smoke and glowing embers. Depth of field is expertly used to focus on the samurai, while the surrounding battle-scarred terrain fades into a darkened blur, enhanced by the cutting-edge visuals of Unreal Engine 5's lumen reflections. The composition feels alive, trending on art platforms with its high-definition, focused artistry, capturing the intense atmosphere of a legendary battle.