Well, here's the end. I meant to get this done in October (its November now), but homework and the like kept me too busy to be able to work on this then. But luckily, this has a more winter vibe instead of spooky vibe to it anyway, so it's not the worst thing to happen. Hope you enjoy!
"WAKE UP, YOU LAZYBONES!" a voice shrilled out from the hallway, quickly followed by a rapid banging on Sans' door. He shook his head, trying to get himself awake enough to function. It was time for another day of work.
"HURRY UP! WE HAVE A LOT TO DO, SANS!" Papyrus yelled from the other side of the door. "I CAN'T LET MY IMPECCIBLE ATTENDANCE RECORD BE BLEMISHED BECAUSE YOU REFUSED TO GET OUT OF BED!"
I'm coming, I'm coming." Sans replied as he slipped out of his bed with a yawn. "sheesh. Your faith in me is jaw-dropping, bro." He paused for a moment, then said, "Gettit? Jaw-dropping?"
"NYEH HEH HEH!" Papyrus laughed. "THAT WASN'T FUNNY AT ALL!"
The two of them soon left their house, preparing for duty. Papyrus typically led the way, while Sans just followed him around. It was a system that they had kept in place for a long, long time. Things were good. Things were quiet. Life went on in the Underground.
For a few hours, Sans kept guard at his sentry post. He took the good opportunity to nap for a few hours, letting his day, and possibly several monsters, pass. After a while, Papyrus arrived to yell at him and move them to their next duty of the day.
Dogamy and Dogaressa had abandoned their posts while following a suspicious smell and were now missing. Lesser Dog had been sent to find them, and was now probably lost as well. Before Greater Dog could join them, Papyrus told him to stay, which Greater Dog obeyed with a whimper.
"SANS, I NEED YOU TO KEEP AN EYE OUT FOR HUMANS WHILE I ROUND UP THE CANINE UNIT!" Papyrus said. "I MUST FIND THEM ALL, AND THEN UNDYNE WILL NOTICE MY GREAT EFFORTS, AND I WILL FINALLY JOIN THE ROYAL GUARD LIKE I WAS ALWAYS DESTINED TO! JUST STAY AT THE BRIDGE AND CAPTURE ANY HUMANS AND I WILL INEVITEBLY ACHIEVE ALL MY DREAMS! IT'S FOOLPROOF!"
Sans shrugged. "Sure thing, bro."
He walked down to the bridge by the end of the forest, easily walking through the far-too-wide bars. He decided to try something he hadn't done in a long time. He used his shortcut to skip his way over to the massive metal door at the end of the path. He sighed as he looked at the door. It had witnessed so many jokes, so many bad puns. Was it still the same after all of this time? Was he?
Would there be an answer like old times?
Sans brought his bony hand to the door and knocked three times, causing three clear rings of vibrating metal. The last one faded away, and Sans waited, hoping that maybe, just maybe, there would be an answer.
There wasn't. he sighed, then walked slowly back to his post. He decided against taking a shortcut. He wanted time to think, and thinking while standing still could get pretty boring.
After a little while of walking and thinking about things, he heard a noise behind him. Footsteps. Coming from the door. Could it be her?
He hid and tried to see who it was coming his direction. He was surprised to see that it wasn't a monster, but a human.
An actual human.
Sans remembered what he had promised the old lady. He had to honor that. Damn, he hated making promises. Sometimes they couldn't be kept. Hopefully this wasn't one of those times.
The human passed by where Sans was hiding in the trees, Sans followed them through the heavy snow. Sans tried to be quiet, but accidently stepped on a branch, causing a loud crack to echo throughout the near silent trees. The human turned around, but Sans had disappeared from sight. The human inspected the human branch, looked around to see if anyone was around, but found no one. They shrugged and continued on their way. Sans resumed his pursuit of the human.
The human reached the bridge, and Sans knew it was time to come out. He wouldn't be doing a very good job of sentry if the human didn't even know he was there before crossing Papyrus' bridge, would he? Sans made sure his steps were audible, and sure enough the human froze at the edge of the bridge. Sans walked forward, taking his time.
When he was right behind the human he said, "Human."
"Don't you know how to greet a new pal?"
"Turn around and shake my hand."
The human slowly turned around to face Sans. Sans stuck out his hand for the kid to take. This would be the defining moment. What kind of human would this one be? Would they laugh? Or would they be dead on the inside?
PSSSSFFFFFHHHHHSSSHHHFFFFHHH
A pleasant smile crept onto the child's face, which Sans was more than happy enough to return.
How else could I really end this but with the whoopee cushion? It's the perfect, defining moment of ANY story. All great tales and epics need to end with a whoopee cushion! But seriously, thank you guys for reading. It really means a lot that you have. Thanks for sticking with me for four chapters of me fumbling around with the lore of a fantastic game that I was unable to ultimately do great service to. Writing this story really showed me how much I still have to learn about all of the amazing little details of this game, and you guys were nice enough to let me know where I had made mistakes, and most of you were even nicer by showing me how I could fix them and improve. Thank you for that. And so ends my October-Halloween-merging-into-early-November story! Hopefully you didn't think it was too bad. I have other stories if you like my writing, although this is the only Undertale one at the moment. That being said, I also have an Undertale related song called "Asriel" if you want to check that out. Faves and follows are much appreciated if you feel they are warranted. With that, goodbye! Hopefully I will see you again somewhere else!
PS: So I'm going to address one potential plot hole in this chapter that I think would be brought up if I didn't do it myself. I made it seem as though there was a long time that had passed since Sans and Toriel had made the promise, and also since they had talked period. A theory among some fans is that Toriel made Sans make that promise when she was getting groceries and Frisk is exploring the ruins. I like that theory, but it is confirmed by Toby Fox that Asgore killed all six of the previous humans himself, meaning that Sans didn't kill any of them, and Toriel tells you that it has been some time in between when the sixth human fell into the ruins and when Frisk did- time in which Sans and Papyrus showed up (proved by the fact that Papyrus and practically every other monster has no idea what a human looks like, meaning that it's been a long time since number six was around), Sans and Toriel exchanged jokes, the promise was made- so we know that a lot of time has passed. Toriel and Sans ending their conversations after the promise isn't something I can prove for and against, they could have just as easily have kept talking, so I was free to choose whichever. I chose for them to end because I felt it gave the promise slightly more emotional weight, since it's the last words Toriel says to Sans before disappearing back into reclusion and loneliness. So that's the explanation for that. Any other questions or concerns, just leave a review or PM me.