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A child having a nightmare in Japan will wake up and repeat three times, "Baku-san, come eat my dream." Legends say that the baku will come into the child's room and devour the bad dream, allowing the child to go back to sleep peacefully. However, calling to the baku must be done sparingly, because if he remains hungry after eating one's nightmare, he may also devour their hopes and desires as well, leaving them to live an empty life.