[Edit]Youhei Yamada is a young boy that finds a small kitten in the park. He and his parents take the kitten to their apartment even though the apartment does not allow pets. Youhei comes up with the name Chi for the kitten. Throughout the series Youhei takes care of Chi. He is noted as being a cheerful, kind, obedient, kid who fond of toy trains. He is sometimes seen with his two friends playing with Chi.
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