A masked celestial samurai in full combat, unleashing a devastating strike against foes with a mystical katana. Clad in mesmerizing, full-body galaxy armor, plumes of jet-black smoke swirling around him. The battleground is a grim, morbid setting from the Sengoku period, yet bursts with vibrant, explosive colors. Every detail meticulously crafted, merging renaissance artistry with the atmospheric allure of volumetric lighting. Inspired by Greg Rutkowski and Peter Mohrbacher, the scene is highly realistic, capturing an ultra-wide epic shot as if rendered in Unreal Engine 5. An immersive, dark, and atmospheric depiction, with a unique fusion of vividness against a backdrop of shadow and mystery.