We're gonna have a MAD time!

Another RESET done by you, aka the human...and another genocide as well...but...unlike last time...Sans remembered what you did.

After Sans woke up, having the memories of all these RESETS in his head, he thought frantically, realizing he doesn't have much time to think of something else, as he knows you could easily RESET the world again, causing him to lose this one in a life time opportunity...

But then...he got an idea...an awfully cruel idea...but it was worth it. He would have to kill every monster in the Underground to get enough power to overpower you, and defeat you once and for all...

And there he went...killing everyone in sight, obviously with guilt...and even his brother, Papyrus...

And now...here he stands in the Last Corridor...the place he always fought you in, as you stood infront of him, the only sounds being able to be heard is the wind flowing, and your slow footsteps towards him...

Sans, who is now called Murder Sans, stared at you, a grin on his face, as he prepared to kill you once and for all...

"it's a dusty day outside...birds are silent, flowers are dying...on days like these, murderers like you...should be burning in the deepest pits of hell."

Murder Sans said to you in a raspy voice, with him going into "Bad Time Mode", as his eye glows a blue surrounded by red...

"...let's start."

Murder Sans said, as the battle between you and him finally started...