8k ultrarealistic photograph of a full-body samurai warrior holding a war flag banner, wearing intricate red and black armor, featuring ornate cinematic lighting with high-definition, vibrant illumination. The scene is hyperrealistic, with high detail and sharp focus, as if rendered in Unreal Engine 5. Set in a red war-torn environment filled with smoke and embers, adding depth of field and a slight cinematic blur. The overall atmosphere is dark yet captivating, with a dramatic play of shadows and highlights, encapsulating the warrior's fierce determination.