A stunning photograph of a samurai warrior with a vibrant yellow war flag banner, showcasing his full body in intricate yellow and black armor. The scene features ornate cinematic lighting and high definition, emphasizing vivid illumination and trending hyperrealism. Created with Unreal Engine 5, the details are sharp and focused, set against a dark, reddish war-torn environment filled with smoke and glowing embers. Lumen reflections enhance the cinematic depth of field, capturing the intensity and drama of the moment.