A female assassin ninja clad in a sleek red and black outfit, prowling through a futuristic cityscape under a dark, foggy sky. The city is alive with cyberpunk elements, featuring towering black and red buildings illuminated by fluorescent lights. The dynamic color palettes blend seamlessly with a sky painted in deep reds and ominous weather, where a red moon peers through swirling red clouds. Rain falls gently, enhancing the mood of suspense and danger. This scene, inspired by anime, blends traditional stealth with a high-tech urban environment, crafting a vibrant yet foreboding atmosphere.