Menacing samurai in black armor, holding a unique glowing demon sword. Samurai stance, fierce expression, battle-ready. Sword emits eerie blue light, intricate demonic engravings, ethereal glow. High-resolution, ultra-detailed, sharp focus. Dramatic lighting, strong contrasts, shadows enhancing menacing aura. Deep depth of field, rich textures, photorealistic quality. Dark, misty background, ancient battlefield setting, ominous atmosphere. Artistic finesse, powerful presence, cinematic intensity.