here's disbelief Papyrus! I like the concept "if instead of Sans Papyrus sees all his friends die, would he always believe in you? or perhaps does he say it for not die
Undertale Genocide run explained: How to play the game in the most evil way possible | Eurogamer.net
Undertale – Sans Boss Dialogue | Genius
Sans is not dead and survives in genocide.
Sans (Undertale) - Wikipedia
Sans Did Die Theory | Undertale Amino
See here's what i don't get: how does sans not die here? he has 1