Narrative fiction is any story (or book) that tells a fictional tale, or one which is not true.
An official letter on a papyrus of the 3rd century BCE. Papyrus is first known to have been used in ancient Egypt (at least as far back as the First Dynasty), as the Cyperus papyrus plant was a wetland sedge that was once abundant in the Nile Delta of Egypt. It was also used throughout the Mediterranean region and in Kingdom of Kush.
I've always felt Sans was the older of the two. Part of it is Sans's attitude, the fact that Sans pays for their house, that Sans reads Papyrus bedtime stories, and that Sans is constantly looking out for Papyrus. Plus Sans is way more powerful than Papyrus.