[@thewizardguy] I also said 'ancient spirits living on in modern bodies', meaning, they had lived previous lives and were virtually unaware there were people other than them in this world. If that even makes sense? I'm bad at explaining things.

Edit; they were pretty much born in isolation, living in the middle of some distant forest until they were found by researchers. As part of an internship for college, the 'modern folk' are chosen to introduce them to modern customs.