Create a realistic image of Karura, a female ninja with black hair that covers one of her eyes. She is dressed in a black ninja outfit with purple accents. Black wings spread from her back, and her hands are forming a ninja hand sign. The background should be dark and intense, with lightning effects crackling around her to emphasize her power. Her expression is sharp and focused, radiating a sense of hidden strength and determination. --niji 6 --ar 5:4