You tap the ground with one hand lightly.

"I told you how this is a world barrier, right? and there's other worlds? Well, if you went through this barrier you'd see all those other worlds. They look sort of like shining silver spheres, hanging in space. There's a cluster of worlds like yours, connected by the fact that they're alternate versions of each other. And then you'd see every one of them looks like it has a string made of light running from it to a huge world below it. It's so large that even though it's a sphere too, it's hard to see where it ends. That's my world."

Something's come alive in his face now. He looks completely fascinated. It's like a bright star is rising out of a swamp of mud. Is this his true intelligence and spark, buried under the weight of all the trauma he's been suffering for so long now? For a few brief moments, his interest is outweighing his other troubles.

"seriously? so if i've got it right, the multiverse is made up of a bunch of soap bubbles, and your world's one of the biggest ones of all?"

The imagery makes you smile. "Yeah, pretty much. You travel around in that space when you want to go to another world. We call them worlds, but actually they can have an entire universe inside of them."

"so why are our worlds connected?" Sans wonders.

Here's where things get delicate.

"Well. There's two ways of looking at this. There was a certain special person in our world who made that happen. Either he created your world, or he created the connection between our world and yours. He made a game that allows players to affect your world, and the players are responsible for every alternate version of your world."

He considers this.

"why?"

"I don't know. You'd have to ask him, I guess. But from his perspective, he created all of you. I guess he wanted to create something good? It's not as though every game is like this. I don't think he realizes you're sentient."

He's silent for a really long time.

"but you do?"

"I'm...different." You look away, and clam up, driven to silence by some bad memories of your own.

You can tell he realizes there's more to this story, but he chooses to be diplomatic and take what you've told him so far as a win.

"hmm. that's a lot more than anyone else has told us."

"You're met other players?"

"a few." He sounds frustrated. "now i wonder if they were just playing their own game with us, because they got bored of the main timeline."

You're not quick enough to hide your own guilty expression, and you're terrified when he notices and you see his eye lights fade in his eye sockets in response.

Too late, you realize your mistake was to underestimate him and his observation skills.

"is that what this is really about?"

"No, I -"

"are you just messing with me for fun?"

You know now to be worried when his body language gets quiet and still like that.

"Sans, I can't stop you from killing me this time," you say, panicked. If he freaks out again, you don't even have your inner shield to protect you.

"i know."

He's really scaring you now.

"so bringing me here, and acting possessed was just another setup? when is this ever going to stop? am i ever going to be entertaining enough to satisfy you? what is it you want? are you trying to find new ways to kill us? are you trying to drive us crazy so we all just kill ourselves the way alphys does?"

This isn't anything like what you'd imagined. You thought he was such a sweet and kind person, because all you'd ever played was the Pacifist run.

But this Sans is something completely different. He's not at all like the videos you've seen of his fight with Frisk, when he was still willing to joke a little while facing death, grinning through his pain.

You should have expected that a person couldn't go through that many deaths without suffering soul damage from it.

Your eyes show your fear, glinting with tears forming. Will it hurt as bad as last time? You tremble, shrinking into a tight ball as you wait for the pain from his attack.

He sees himself reflected in your eyes, and realizes that unbeknownst to him, he's already stood and raised one hand, about to command his magic and send his summoned bones piercing through your body-

From behind him, one of the floating canine cannons nudges his back ribs gently, its glowing eyes concerned.

Sans shudders.

Suddenly, you're left in pitch darkness, as all of his magic has disappeared, and you can sense he's gone.