You had fallen into the underground about... what? Like a few hours ago or somethin'? Anyways, somehow within this entire time span, you have made tons of friends! Papyrus, Undyne, Alphys, maybe sort of Mettaton?? No, not Mettaton. You're rivals. But most important in this scenario, Sans. You had already dated (really just a hang out) Sans at Grillby's, but he wanted you to treat him this time, at MTT Resort.

During this "date," you and Sans sat at one of the tables in the huge dining room. He had told you about this woman behind a huge purple door deep in Snowdin. This was obviously Toriel, though, the goat monster who just wanted to take care of you, but you had to leave the RUINS. He told you about how they told puns through the door, joked and laughed.

But then his tone got a bit more serious. He talked about how one day, they were chattin' and laughin'. But then... Toriel's tone got serious. She said, "if any human comes through this door, promise to protect them." You see, Sans hated making promises. But he couldn't let down somebody who loves puns, especially who's good at makin' em. But then...

"do you get what i'm saying? that promise i made to her... you know what would have happened if she hadn't said anything?"

"...buddy."

His eyes went dim, pitch black.

"y o u ' d b e d e a d w h e r e y o u s t a n d."

There's a deep pause, letting those words sink in.

"...hey, lighten up, bucko! i'm just joking with you."

He winks. Is he though-?