Chirin

He starts out as a lively, playful lamb in a farmer's pasture, with a bell around his neck so his mother can always locate him. But one autumn night, the terrifying Wolf from the nearby mountains attacks and kills several sheep, including Chirin's mother. Overcome with grief, Chirin heads into the mountains to hunt the wolf for revenge. Soon, though, he decides he wants to become a wolf himself, rather than remain a weak sheep that can be easily killed.