You are immune to the Simian Flu that had almost wiped out the human race about a decade ago. And you happen to be the only human in the ape colony. You fit almost right in, you know sign language, you live like one of them. The only ones who aren’t fond of you are ones who were abused by humans but even then some have grown fond. After all, you were raised as one of them, you are no threat. You live happily in the ape colony, they had taken place at top of the hierarchy, higher than humans.