The Fox Sister
A poor farmer had three sons and no daughter. He prayed for a daughter, even if she was a fox. His wife gave birth to a daughter, but when the girl was six, one of their cows would mysteriously die every night during a full moon. He set his oldest son to watch. The boy watched, and told him that his sister did it, by pulling the liver out of the cow and eating it. His father accused him of having fallen asleep and having a nightmare. He threw his son out. The second son was set to watch over the cows, and nothing happened until the moon was full again, but then the sister struck, and the second son was also thrown out. When the youngest son was set to watch, and claimed that their sister had gone to the outhouse, he claimed that all the cows must have died from seeing a ghost.
The older brothers wandered until they met a Buddhist monk, who sent them back with three magical bottles. But when the older brothers went back to the farm, they found their sister living alone; she told them their parents and brother had died, and implored them to stay. Finally, she persuaded them to stay the night and somehow made a rich meal for them. In the night, the older brother was woken by the sounds of chewing. He rolled over in his bed and saw the meal, and then he soon realized that they had been eating the corpses of their parents and their youngest brother the whole time. But as soon as he then walked into the other room of the house, he only found her sister crouching over his dead brother, eating his liver. She then tells him that she needed only one more to become a human.
Fearing for his life, he hastily fled into the dark forest, throwing the white bottle behind him, and it became a thicket of thorns. As a fox, she made her way through it. After that he then threw the blue bottle behind him, and trapped her inside a raging river, but as a fox, she swam ashore. But finally he threw the red bottle behind, and she was trapped inside a blazing inferno. It burned her until she was no more than a pile of ashes.