Sans curled into a ball, wanting to scream until he couldn't anymore but his throat was much too hoarse to muster such words.

Everyone... was gone. He killed... everyone. Their dust was on his hands, their blood was scattered around the empty lonesome world he called home. The human he once hated was now dead infront of him, their soul being exempt, and freed from their body, their now cold body that bled dark red blood into the ground infront of him.

He let out a hoarse voice, laughing weakly from what he had done. He was unable to truly make any other noise in the moment other than laughs and giggles. Finally his voice broke down into deep coughs, blood coming down and into his pale, bony hands, staining them the cold purple-red blood he had coughed out moments before.

He scoffed at the sight, how weak was he to spit up blood after a laughter of fit like that. He slammed his fists into the ground screaming as much as his voice would let him.

The echoy cavern the underground was echoed with his sound repeating, and repeating. It almost was mocking him, it mocked how he sounded, how he spoke, how he's all... Alone.

He had no one to be with, no one there with him. He killed his own fucking brother what would you expect!? For everything to be okay and dandy? No he's all fucking alone and it's all his fault. His fault.. His fault.

He found no joy on anything he used to enjoy, science was useless, puns were useless if you had no one to tell them to, and it's just sad to tell them to yourself.

He hadn't eaten for days, he most likely wouldn't continue to either. All he was able to do was wander the streets, I mean, the food would end up going bad or running out anyways, and he's no cook- nor farmer so he couldn't prepare his own food.

He stood up shakily, maybe he would be able to find something his useless body could do.

He wandered through the underground, it was all he could muster to do anyways.

He did this for days, maybe weeks, he wasn't all that could of counting time. He went through every part of of underground, he learnt things about the others he had never known, he had found knew places he had never explored.

He may have spent 30 years in tgat underground prison but that doesn't mean he was all that adventurous, maybe a little bit as a kid. He's only been in Snowdin, some of Waterfall, and some of Hotland, and of course... Judgment Hall. I guess you could count the castle, he grew up in there after all.

It was just him, Papyrus, Asgore, and possibly... Who was it? A man, their father, that's all he could recall.

It was just the four of them, well until the incident, then just the three. Then it was the three. Once Sans had turned old enough, about 16, to take care if them himself he moved out with Papyrus to Snowdin, shortly after Toriel and Asgore got married and soon had their first child, Asriel.

Sans pondered to himself, thinking about how he grew up he thought to himself, would that make Asriel and Chara their brothers? Would that mean he had 3 dead brothers and was the only one left?

He chuckled at that, it wasn't funny but it was interesting in the very least. Something to keep his mind off of everything.

Another week or maybe more went by. He was so alone, so fucking alone. He banged his head against a wall, he cried but then hurt himself for crying, he would bring his own blade up to his arms and sliced at it, over.... And over again, until his arms and legs felt numb and had none to bleed once more.

He had to torture himself, he couldn't just kill himself he deserved worse than that, he killed his fucking brother for pete sake!!

He killed his friends and those he cared about too, he deserved whatever the worse he could get in the end.

As he thought to himself he heard distinct chatter outside of Grillbys where he was now. Multiple people, about 2-?

It sounded like one was speaking constantly and the other was telling him to shut up.

Soon the bell of the door rung as the two walked in. Sans jumped up and stared at the two getting ready his (unstable) magic to fight the two if they were hostile.

How the hell did people get down here anyways? Are they humans? How the fuck would they even get through? Did they fall down? Why were they even here?

Soon the two showed in his vision. He saw two skeletons, well one was identical to him he just had black tar like tears marks coming from his eye sockets and no eyelights with a red target soul. His sleeves were stained with blood like his own and he had a knife in his hand.

The other looked a lot less like him, still a skeleton however. He had a black tar like substance, somewhat similar to the others coming from his eyes but all iver his body and with a more turquoise tint to it and tentacle type things protruding his back.

"What do you two want!?" Sans shouted from across the room, his voice stoll hoarse and clearly not used to speaking very much for very long.

The goop like one chuckled and soon spoke, he had a deep voice that rumbled the room. "I have a deal that I'm hoping you'll take into consideration."

Sans eyes him weirdly, "go on.." "Well, I feel we should start with something else. My name is Nightmare, this is my subordinate, Killer."

"Killer" nodded his head hello and deepened his grin in further, fiddling his knife. "Now how about you share, what is your name?"

"... Sans.." Killer seemed to laugh out. "Welo if we're doing that yeah I'm Sans too!" Nightmare frowned at him. "I however am not, do you understand what alternative universes?"

"Hm that old theory? Sure." "Well it's no theory it is true, I doubt you can fight me as you know about alternate timelines. Killer here is you if you and Chara joined forces, however he betrayed Chara and killed them."

Sans gave no surprise just a numb look. "Okay, I have no other name to go by." "Dust! I like Dust, Dusty Dust!!" Killer spouted out happily.

Sans sighed "sure, Dust it is then. Now tell me, what was your 'deal'?"

Nightmare chuckled and gave a dark look. "Would you like to join us? Basically I give you a place to live, food, clothes, in exchange you need to kill some people when I ask, deal?"

Dust glared at him for such words. "What?"

"I repeat, would you like go join me or not?"