A celestial samurai masked in mystery charges into a grim battlefield, his enemies recoiling under the ferocious power of his enchanted katana. Draped in full-body GALAXY armor, each movement sends ripples of vibrant nebulae colors across its celestial surface. Plumes of jet-black smoke and bursts of vivid colors encircle him, contrasting with the haunting Sengoku period setting. The scene is painted with incredible detail and a dark, morbid atmosphere, echoing key renaissance visuals. Volumetric light carves through the shadows, crafting an atmospheric ambiance. Rendered in the distinctive styles of Greg Rutkowski and Peter Mohrbacher, the composition achieves a hyper-realistic quality, captured in a sprawling ultra-wide epic shot using Unreal Engine 5, aspect ratio 16:9.