A terrifying, man-eating monster the size of a mountain. It lived in the mountains of Japan near Lake Biwa. The dragon king of that particular lake asked the famous hero Hidesato to kill it for him. The hero slew it by shooting an arrow, dipped in his own saliva, into the brain of the monster. The dragon king rewarded Hidesato by giving him a rice-bag; a bag of rice which could not be emptied and it fed his family for centuries.