"青い女" (Aoi Onna), or "Blue Woman," is a character from Japanese folklore. She is often depicted as a ghostly figure with blue skin and long hair, representing the spirit of a woman who suffered in life. Her story varies across regions, but she is commonly associated with themes of love, loss, and vengeance. In some tales, the 青い女 appears near bodies of water, luring men to their doom. This character is part of a broader tradition of yūrei, or restless spirits, in Japanese culture, which reflects societal fears and moral lessons about the consequences of one's actions.