Yuko Ichihara is a fictional character from the manga and anime series xxxHolic, created by CLAMP. She is a powerful and enigmatic witch who runs a shop that grants wishes, often at a cost. Yuko is known for her striking appearance, including her long black hair and distinctive clothing, which reflects her mystical nature. In the series, Yuko serves as a mentor to the protagonist, Watanuki Kimihiro, helping him navigate the supernatural world. Her character embodies themes of fate, desire, and the consequences of one's choices, making her a central figure in the story's exploration of human emotions and relationships.