The provided information does not contain any reference to a character named Long Arrow, so an accurate answer cannot be provided regarding why the villagers shun him without further context on the specific story mentioned.
The question seems to be asking about a specific story that is not referenced in the provided passages. The details given from the excerpts don't include a character by the name of Long Arrow, so it's unclear which story or character the question is referring to. Therefore, I am unable to accurately answer why the villagers shun Long Arrow without additional context or information regarding the story in which this character appears.