InuYasha
The Suspicious Faith Healer and the Black Kirara (4x9)
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Kuroro, who is part of Kirara's species except with more black markings, once belonged to a village. She is considered a highly intelligent youkai who helps the village by exterminating all the rats and mice there. She was chased out, though, when a spiritualist person came and said that two-tailed cats were bad fortune.