"This again? That's nonsense. You're Sans." Papyrus shakes his head. "And you're right here in front of me."

If he's honest with himself, this all does seem rather unreal. The strange place they're in. The way that he still can't remember how he got in here. His brother's open, whiplashing mood. "...You are pretending, right? You couldn't forget me in a few hours."

He saw Sans just this morning, before they went off to do their own things in the city. There haven't been any problems with the humans; Frisk's a great ambassador, letting the whole surface world know that monsters are friends. Even if there were, Sans is plenty capable of taking care of himself in that sort of way.