A stunning 8k ultra-realistic depiction of a samurai warrior brandishing a brilliant yellow war flag banner, adorned in intricately designed yellow and black armor. The scene is illuminated with richly ornate cinematic lighting, capturing high-definition, vibrant details. The composition is hyperrealistic with exceptional focus, as if rendered in Unreal Engine 5. The setting is a dark, reddish war-torn landscape, filled with swirling smoke and glowing embers, creating dramatic lumen reflections. Depth of field and photographic elements enhance the realism, making it a piece sought after on art platforms. The composition is set in a vertical 9:16 aspect ratio, with small, creative elements such as subtle patterns on the armor and a fierce, determined expression on the warrior's face, adding a unique touch.