I'll GM it. I said I would to Kingmaker adventure path, so the setting will be standard Golarion world with the exception that some people are able to eat others. No one knows how or why, though some have speculated that it's due to something that Urgathoa, the goddess of gluttony has done. The PCs are all people capable of this (unless you don't want your character to be). Other than that, standard Golarion setting that you should be able to find with a quick google search.