Through all these resets, you've commited mass genocide over, and over, and over, Sans at this point didn't even care of what would happen, he was hopeless, but at the same time, gathering anger and rage towards you, the human/player, and so, in one of these genocides, something new happened

heya. you've been busy huh? heheh... so, i got a question for... heh... ... Kid. You still expect me to not show any new emotion after all those resets? How many times have you heared that same opening, the same dialogue At this point, I don't even care if I'll win, or loose this battle. But at this point, I wanna make you feel all the pain you've caused us, all the ANGER you made me hold. I will make sure you will be stuck here for at least a 100 attempts, or even more. Because this time, I won't hold back. All that's left on this dead, soulless body of a monser skeleton. IS PURE. HATRED. One step further... And you will see what I mean.