Create a highly detailed and realistic cyberpunk katana. The blade should have a sleek, high-tech design with glowing neon edges (blue, purple, or red). Integrate circuit-like engravings along the blade and a metallic texture with slight wear. The hilt should be ergonomic and wrapped with synthetic grip material, featuring small LEDs or holographic elements. The overall style should be futuristic, elegant, and slightly intimidating—perfect for a sci-fi assassin. Use PBR textures for realism and atmospheric lighting to highlight reflections and emissive details.