Sparing sans in the genocide run

undertale

When fighting sans, what would happen if you continually spare him? As in he is the only spared monster. How would the genocide/neutral route end?

Best Answer

There is a thread abourt this on Steam in which they tried to do this. After a test, the result was:

There was no change at all, Only that he had a different expression, its a glitch.

This is where the thread is: https://steamcommunity.com/app/391540/discussions/0/371919771750167339/