Yin is a wolf, surviving the world with her sister Yang. Yin and Yang are basically the same but Yin is an all black wolf with a white spot on her right eye. Yang is an all white wolf but with a black spot on her left eye. they live alone because their parents were killed by the Western wolves because Yin and Yang were different. Yang has been training her sister and herself in order to survive and rely on each other.
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