A/N: Heya! Thought I'd grace you with the first chapter of my own idea, maybe? I don't know. So I have my own headcanons about Sans' ability to check things, I like to think he can only see the LV and EXP followed by the brief text of description. Only because y'know judger of souls and whatnot. Anyhow, disclaimer I do not own Undertale or Underfell. See you in the next chapter my awesome peeps ^_^

It was like any other day that he woke up. Well, mostly. He woke up, feeling like he wanted to do nothing at all and just lay there and got up eventually to the sound of his brother calling his name. Now some things were amyss that he caught onto. For one Sans could tell the room was off, it was clean and kept and not to mention the bed was more rigid and worn down like the rest of the exterior of the room. Not to mention his brother's voice sounded more rough and menacing but it was still his. He got out of the bed and stood up, already in his clothing, he walked down the stairs to be met with Papyrus tapping his foot impatiently, a scowl set on his face.

Now what surprised Sans about this was that Papyrus looked different, more terrifying than anything. His mouth had jagged teeth and his posture was sharp and ready, his clothing more menacing too. Even if Sans wanted to think that his brother was trying something new, he knew this was not his brother. He would need to check though first. He ran a check on him, it read:

Papyrus the great and powerful,

LV: 7

EXP: 472

Can dust you with ease

Sans did not like those stats at all, also as the check ran on, the main trait was being able to dust him. When Sans snapped back into reality he had to dodge a red bone being sent his way, it was a white bone with red magic surrounding it and also had a sharpened end, almost broken and it could be fatal if it hit him. Well anything could in all honesty. He could tell this was not the same Papyrus he knew, but it was still him.

"Yeesh Paps. I know I zoned out there but no need to try and kill me over it." Sans would have made a pun if his life just wasn't at risk. Sure he made puns when faced in genocide but that was only to annoy the brat that killed everyone.

"FOR ONE, WHAT ARE YOU WEARING? IT LOOKS UTTERLY RIDICLOUS AND I DO NOT WANT YOU OUT IN THAT. YOU WILL GIVE ME A BAD NAME AND WE BOTH KNOW WHAT WILL HAPPEN TO YOU THEN. SECONDLY, YOU KNOW TO CALL ME BOSS! IF YOU CALL ME ANYTHING OTHER THAN THAT AGAIN I WILL PUNISH YOU. LASTLY YOU KNOW YOU I DO NOT TOLERATE YOU BEING LAZY! NOW GET TO YOUR POST!" Papyrus shouted at Sans. Sans raised a non-existent brow as he gave a shrug and a nod. Just what was going on here? How could Papyrus be that cold? Well he couldn't dwell on it, he could feel the gaze of the taller on him. He took a breath and walked outside with no hesitation and without looking back to his post.

List of things Sans never thought he'd have to deal with today. Papyrus trying to kill him, seeing a monster being killed by another as they were called weak and also another one, mustard behind his post. Why mustard of all things? Sans sighed as he sat at his post waiting for nothing to happen as always. He decided to humour himself and walk to the door. The one with one person that never failed to amuse him. He knocked on the door.

"Knock, knock." Sans began.

"Who's there?" A voice replied. It sounded like her, like Toriel. Yet it was more unstable, Sans brushed it aside.

"Dishes."

"Dishes who?"

"Dishes a bad joke." Sans chuckled a bit at the bad joke. They were something that gave him reassurance, no matter how many times he heard them. However unlike usual, Toriel wasn't laughing.

"That was bad…Here I have a better one. Did you hear that one child called Susie?" Toriel began. When Sans said he didn't he had heard a snicker. "Her arms got ripped off." She laughed. When he was too stunned to reply, at the morbid joke she spoke up again. "Okay, I guess you didn't like it…Here's another one then. Knock, knock."

"Who's there?" Sans asked, hoping this one would be less morbid.

"Not Susie!" She laughed even harder. Sans managed to force a small chuckle. Something wasn't right here at all. The Toriel he knew would never make a joke like that. When the laughter died Toriel spoke again. "So…I know this may sound odd. Seeing how we only have been talking for a week…Can you promise me something?"

Sans knew what this was and he took a breath. "Depends what it is."

"I want you to promise me, if a human ever comes through here…make sure you kill it. Don't let it escape, I've had enough of this place." Toriel sighed.

"Wow. Uh, that's a bold thing to promise. I can't do that one." He was more confused than ever, Toriel asking for him to kill a human? He needed to know where he was and fast.

"Why is that? Surely killing is in your nature. You have told me before you work as a sentry, so it should be your job." Her voice demanded.

"I'm not doing it for a good reason here. What if the human frees us all? What if the human decides to give mercy? What if, the kiddo gives us all hope?" Sans hated killing them, they were family to him.

"Going soft on the ideas of a human? Who is to say it will be a child? They must be killed one way or another, you know how it is here. Kill or be killed." Toriel's voice seemed to show joy despite her words.

"That is where I cut ya off. It isn't like that and no matter what I am protecting that kid. Also did you forget all the other souls were children too? I see a pattern here that can lead to such a possibility. Tibia fair, not everything is about killing." When Sans was met with laughter he sighed and walked a little from the door. He walked away from Toriel, he couldn't imagine her like that. Walking away now to him seemed to be an act of mercy.

As he walked, he had saw one monster he both wanted to see and not wanted to see. However like everything here he looked different. The flower for one had petals that had signs of being broken or ripped. Also he carried himself in a smaller way, almost scared? Well Sans wasn't about to take chances. He walked up behind the plant and cleared his throat.

"Well, if it isn't the weed. What are ya doing out here?" Sans spoke with hostility, he didn't trust him although he was curious as to why he was out here.

Flowey gave a squeak of fear as he popped into the ground and reappeared a little further away from him and now facing him. Sans gave an amused chuckle, he had never seen Flowey act this good at being scared of him. In fact this was a new trick, usually by now he would be insulting Sans.

"P-please don't kill me this time. I'm only h-here to get away from Toriel for a w-while." The flower squeaked. The fear still present, making Sans raise a non-existent brow.

"Okay drop the act now weed, you're not fooling anyone. Jus' say what's going on and I may let you go." Sans glared at the cowering plant.

"I told y-you. I'm hiding from Toriel. S-she saw me and she w-wants to kill me. N-No matter what." Flowey had flinched at the glare, shaking in fear.

"Okay, let me get this straight. Tori wants to kill you and you don't want to kill her? Or anyone here?" Sans ran through getting meek nods from Flowey. Sans ran a check on his soul, hoping that could clear some stuff up.

Flowey the flower:

LV: 1

EXP: 0

This flower seems to be scared of its own shadow

That had confirmed it for Sans as he took a deep breath. Usually with those stats it came up with something like 'planning on having some fun' or 'plans on getting some LOVE'. As these didn't come up Sans took another look at the other.

"Whelp this is just orchid." He sighed. Sure he covered up that Flowey was not harmful this time, it only meant there was an issue.

"S-Since when did you start making puns?" Flowey asked with hesitation, clearly expecting to get hurt for it.

"Yup, if ya really expect me not to make a pun, this is going to be a bud time for you." Sans chuckled, proud of his puns. He could see the confusion on Flowey's face and it showed more signs that something was not quite right. "Did you do something to the timelines?" He asked, his voice lowering as he walked to the plant.

"What? I only reset when y-you kill me or anyone else…a-and I'm good at hiding s-so it isn't that often." Flowey responded, shaking in fear but remaining where he was. "Wait…I mean F-frisk has reset the timeline. O-only because they couldn't save everyone. B-But this is their f-first reset, you should k-know this."

"So the kiddo here reset once huh…" As he was met with a small nod he hummed in thought. So everyone around him as far as he knew went insane, and his most hated enemy was the only decent monster aside him? That could not be caused by a singular reset and he knew from memories they had reset more than once. Way more than one time. "The problem with that is the fact the kiddo I know has reset a lot of times. Not to mention everyone I know isn't dusting each other and gaining LOVE or EXP."

"T-that doesn't make sense though…F-Frisk only reset once. E-Everyone fights each other…I mean a-aside me." Flowey began.

"Which means, I must be somewhere I'm not supposed to be." Sans sighed as he gave a lazy smile. "Didn't think this would happen to me. Whelp, imma go to Grillby's weed."

"No! I mean, if you're from s-somewhere else…I-it's not safe. Y-you could be killed." Flowey, still ridged seemed a little more at ease, maybe it was the fact that Sans hadn't made himself known to want to attack him.

Sans chuckled at that as his eye lights went from his normal white to nothingness, a chill running through the air that wasn't due to the snow. "They'd need to be able to hit me first." Sans allowed his eye lights return back to white as he looked at the now terrified flower. Sans let out a chuckle, not expecting to be able to get along with him.

"R-Right…" Flowey managed to chuckle weakly.

"Look, it'll be fine. I know the basics here, I don't wanna fight, but I'll be sure to stick around for the kiddo at least. Speaking of, when is it time they fall?" Sans asked, curious as to when they would arrive, so he could both think of how he got here and also to confuse them.

"T-they are due s-soon…" Flowey gasped as he shot into the ground and reappeared behind Sans, towards the ruins doors. "I h-have to go. We'll s-see each other again." The flower proceeded to go back into the ground, and did not resurface this time around.

Sans nodded, hoping he would. He had pieced he wasn't from here, yet the parallels made it too obvious that this was some sort of alternate universe, if not then the world was just broken at the seams. He walked back to his post, or well the him from here's post. He sat behind it, keeping attention to if he heard the door open.