Sans glared at the human before him, his mind almost numb with pain and anger as they stepped forward, blade raised as they ignored his mercy and lost all second chances. At least for this Reset anyway.

The battle started without warning after that, his attacks merciless and dodging so precise that he was sure this would be another battle ending in a Reset. After all, knowledge of a coming attack did not mean that you would be fast enough to avoid it.

Only this time was different, this time the room they were in shook, walls disordered, and suddenly a human came crashing through the air, their back colliding with a pillar before falling to the ground, their head hitting it with a smack.

Sans and his opponent stared.

They looked just like the human before him; their only real different being that their sweater was purple instead of green and while they looked beat up they weren't nearly as bloodied at the one Sans had been fighting.

The world shook some more before another form was sent flying through the air, this one larger, and decidedly not as human, as they missed the pillar and crashed through a window. Sans winced, whoever that had been, they probably hadn't survived.

The air stilled after that, walls returning to normal as Sans and his enemy watched the other human, waiting to see if they were alive, though Sans was still keeping an eye on the green sweater human, just in case this was a trick to get him to lower his guard.

The purple sweater human stirred and finally stood up, shaking their head softly as they leaned against the pillar, breaths loud and shaky as they finally raised their eyes; brown eyes, not red, another difference between the two humans before him.

They looked behind them to the broken window, staring at it a few moments before letting out a breath of relief.

"Good riddance."

Woe, this one talked, another deviation from the one he had been battling, though when they turned and saw the other human and then him he noticed how their eyes narrowed in a familiar, but less, hate filled way. So the humans weren't so different after all; great, two humans to fight instead of one, and if he had to guess that other form had been another him so he was on his own again.

Purple sweater stepped forward, arms raised as they joined the battle, hitting something he couldn't see but when no attacks came he guessed she had been checking his status. Green sweater just attacked and he dodged once more. It was his turn now, and he wasn't going to waste it on a status check for the purple sweater wearing human, no he was going to fight.

Blue attack was used on both as he slammed them around and lowered their HP; or at least Green's HP for Purple had somehow erected a shield that for every attack where he slammed them they healed by one. Bright side, Green didn't have that ability so he could still use it on them at least. His attack continued on and he was glad to see that it was only his Blue attack that seemed to heal Purple. By the end of his barrage Green was down to 10 and Purple was at half health.

Purple looked scared; eyes constantly shifting over to Green then back to their own options, seeming to hesitate before they said. "Hey, don't let him touch the pink ones." And suddenly Sans' soul was brown and he had to dodge Purple's flying magic knives, Green doing as requested and grabbing all the pink ones before they reached him, their HP going up whenever they touched one.

Okay difference number four Purple sweater human had magic attacks, easy to dodge magic attacks but still magic. Yeah he was confused.

Purple's turn ended and Green used hers to try and slash him, having long since been out of food to help heal their HP. Sans dodged the attack and looked at the Purple human, deciding that using a "Check" was in his best interest at the moment.

Frisk. Human from Hidin Town.

LV: 4

HP: 23/48

Just wants to protect her village from the monsters above, is good at card tricks.

Sans stared at the words for several moments, knowing that neither Green or…Frisk could attack while it was still his turn. His brain rereading the information before him as he looked back up at them, trying to see the kid as not a slightly different copy of Green but as their own individual person. With effort he looked at the kid with fresh eyes and was then able to see it; Frisk was terrified, her eyes were constantly shifting from her own options then back to Green, probably looking at their HP. And he vaguely wondered if she was scared of a Reset. After all unless she had Saved she would just go back to fighting his other self again.

Looking back down at the words he continued to stare at one in particular, above. It hadn't said below but above, that most likely meant that the monsters in her world hadn't been banished underground but were living on the surface, and if he was to guess it also meant that it was the humans who were banished to the underground. Sans didn't end his turn yet, instead he opted to try something. Something he hadn't really believed would work but was now considering.

"Hey Frisk-" He began eyes locked with hers when he spoke.

The kid actually flinched at his voice; her eyes widening when she realized what he had done. Green just remained silent.

"In your timeline did the humans lose the war?" He watched her carefully, half expecting her not to answer and so reading her body language just in case.

Frisk opened her mouth and after several moments said "Monsters won…Why are you asking?" She kept on looking over to Green, as if expecting their help in this. Sans grimaced when he realized that the killing intent in the other's eyes was now focused on Frisk. Come next move he was pretty sure they would murder her, just for the fun of it.

"Listen Frisk, this timeline humans won that battle, and your friend there-"he gestured to Green, "-just spent all her time killing what remained of us monsters." Frisk didn't seem to believe him but stilled when she saw Green grinning, dagger held up as they nodded. The poor kid looked sick, her face going several shades of pale as she backed up from both of them; hand hovering over what Sans suspected was the "Flee" button.

He ended his turn there and wasn't too surprised when the kid took her chance and ran, though he was surprised to see she could teleport. Green looked upset but then turned a grinning face back to him, eyes dancing as they tried to slash him. He dodged and ended them within his next two turns.

Green's soul flouted up and Sans stood back, waiting for the moment when the Reset would take place and the battle would start again. He briefly wondered if Frisk would fall into the fight again and if the other him would remember enough to be able to survive being flung through the air.

Only this time nothing happened.

Green's soul vanished minutes after death and Sans stared at the place where it had been. What? Why didn't they Reset? They always Reset moments after defeat because the moment their soul vanished that was it, no more coming back and fighting. He briefly thought that maybe they had gotten bored but that didn't seem likely, they had just teamed up with a human who could use magic, and even if the chances of Frisk appearing again in the next Reset were slim he figured Green would just go for it. But they hadn't… Had whatever had made it possible for them to Reset finally stopped working? That was an interesting thought.

So it was finally over. No more Resets and no more watching as everyone he loved was killed. It was over. This was it; the last one. And with that came the knowledge that there were no more chances of seeing Paps, Toriel, Grilby, or any of the others ever again. They…weren't coming back.

Tears gathered in Sans eyes as he collapsed on his knees, head lowered as he allowed grief to flow through him, having never fully experienced it with the knowledge of a Reset bringing them all back hanging over his head. No, now they were really gone and he had no one. He was alone in the underground with nothing but the dust and few birds to keep him company. Hands covering his eyes he cried at the injustice of it all, a selfish part of his heart wishing that the monster had still been able to Reset so that he could see them all again, even if it meant having to watch them die once more.

This was so unfair! Why? Why did the universe seek to punish him? What had he done to deserve this? Fist pounding the ground Sans' cries were echoed back to him, as if the building was seeking to mock his solitude while also offering comfort as he lay there. Swallowed by grief, his mind traversed to dark corners he had avoided back when Green was alive. Dark corners where he wondered at the point of living anymore, after all, no one else was left and he could not think of a single consequence to ending it all and joining them. Sans remained motionless on the floor, lacking the will and energy to stand as all his sorrows washed over him. He felt so small and helpless. Even if he had won the price had been far too high.

He didn't notice the passing of time as he stayed there, motionless as a statue with never ending streams of tears nor did he notice the shift of magic in the air or the quiet footsteps as they approached. He didn't glance up as someone began to rub soothing circles on his back before pulling him closer so that he was leaning on them as they softly began to hum, so far gone in his grief that only the barest of their comfort reached him.

Minutes passed and steadily built into an hour before Sans had regained enough sense of mind to register the world around him again. Lifting his head he jumped back, blue flashing in his eye. Green, Green had….His muddled thoughts paused when he realized they were wearing the purple sweater and that their eyes were brown and not red. Oh it was Frisk. Frisk had come back.

She offered a small smile of comfort, hand reaching out and landing on his shoulder. "I'm sorry for your loss…And.." She paused and looked down, appearing so much older than she was. "Whoever they were…I'm sure that they still want you to live."

Sans stared at her, her words taking extra long to register in his brain but when they did they spread fast and awoke the memories of his family and friends back when times were happier. Live. Yeah he could definitely see them saying that. In fact he could picture it perfectly. Undyne would be screaming at him to not give up, spear waving threatening in her hand. Alphys would be comparing him to some anime character that, for some reason, went through something similar. Toriel and Asgore would use their rank as friends and rulers and officially decree he must live. Grilby would threaten to somehow take away all his remaining ketchup. And Papyrus…He would be fighting tears and failing as he makes one last lazy brother comment before telling him to take that human's offered comfort and live.

Frisk was once more rubbing soothing circles along his back and he felt himself smile a little at her and the picture they presented. Sans the Skeleton was being comforted by a kid who at most was in their early teen years and to top it off also looked like the killer he had been fighting for years upon years of Resets.

"Thanks Frisk…Thanks for coming back here…"He said, mind still too muddled and exhausted to think up a pun. The kid nodded and after several moments of comfortable silence Sans finally had the energy to stand back up. "I'm gonna head home and…nap…." Sans stopped and looked back at Frisk, gaze curious as he suddenly thought through how she had appeared. "Frisk…Do you have any way to get back home?"

The girl looked up at him in surprise before looking back at the point in the air where she and the other Sans had come through. Lifting her head back up she smiled at him and shrugged. "eh, I'll just wing it." She said as she too stood up, walking over to the point where she had appeared and touching it. The room shook and wavered once more as she proceeded to try and push through whatever barrier separated her from her home dimension.

Sans watched as brown magic surrounded her form encasing her in the shield she had used while fighting, before the air around her seemed to balk, sending the girl flying backwards and towards a wall. Sans quickly raised his hand, blue magic flashing as he caught her soul midair and softly lowered her back to the ground, the girl stumbling a bit when he was no longer holding her up.

"Guess that didn't work huh?" Sans performed a quick check and was surprised to see that her health had gone down to ten. That didn't make sense, she hadn't hit anything.

Frisk nodded slowly, face pale when she said "Thanks for catching me; it really hurts when the rebound happens, hence the shield this time." Sans stared at her before suddenly realizing what she meant. She had tried to return before this and had experienced similar effects with the messed up teleportation. "Though I almost made it through there so that means that is the best spot to try again." She started to walk back over, brown magic still swirling in a shield when Sans stepped in front of her.

"Okay, I get that you humans are determined and stuff but are you just determined to die? Right now you're at less than half health and I'm going out on a limp here-" Hey pun, "but I'm pretty sure that you were at almost full health when you first came through." Frisk stared up at him and crossed her arms as she looked away saying.

"That's why the shields good, so long as I use it kinetic energy heals me." Sans stared at her for a moment and then grinned.

"Hey kid, say 'bread'"

Frisk looked back at him in confusion, dropping the shield. "What?"

"Say 'bread'" He repeated his grin widening.

"…uh..bread?" She said it like a question and Sans laughed inwardly to himself.

Raising his hand he said, "get flicked on the head" and flicked her. Frisk winced still staring at him as he added "Huh, thought you would go down a point." Well that did it.

The girl's eyes widened, her cheeks turning red in anger as she openly glared at him. "Hey, I'm not that weak!" Sans turned away, hands behind his back as he grinned cheekily, at least now he knew that she was stronger than an Ebil Temmie.

"Don't know why we're talking about time now kid but yeah I think you're not a week either, I mean how can anybody be a way to keep track of the days." Sans could feel her glowering behind him and tried his best to keep from laughing out loud. He heard Frisk let out an annoyed huff before stiffly walking passed, seeming intent to try and teleport again. "Hey Frisk?" She looked back at him. "How about we get you back to full health before you take another crack at that? I know a place." He held out his hand for her to take, his grin widening when she hesitantly reached out and took it.

The sound made from a whoopee cushion echoed throughout the hall.

"Ha, ha everyone falls for that!" Sans laughed, clutching his stomach while pointing a hand at Frisk; breaking out into fresh sets of laughter at the look of complete and utter outrage that covered her face. Frisk was shaking slightly, her hands balled into fists at her side, seeming to contemplate if she should hit him or not.

"You know, if your health wasn't a one I would-"

"Yeah yeah, I get it." Sans waved off her threat before walking away, heading toward the Judgment Hall's exit. "Come on; let's go find something to eat." When he didn't hear her footsteps echoing from behind he worried that she had decided to decline his offer after that last joke. But when he turned around she was gone, the hall empty. Where-

"Boo."

Jumping he turned around and saw Frisk, the kid grinning up at him smugly. Oh right, she could still teleport.

Grinning back at her he said, "nice one kid, been years since someone got me like that." Frisk giggled and then, after making sure it was empty, took his hand again.

"So where we going?"

"Depends, you want overcooked leftover pasta or burgers?" He asked; planning to use a shortcut to take them either to his house or Grilby's.

Frisk's nose scrunched up in confusion as she said, "well overcooked doesn't sound good but what's a burger?" Sans stilled and then looked down at her, yep she was serious.

"Kid, your world must be really messed up if you don't know what a burger is."

The kid turned narrowed eyes back to him and opened her mouth in a possible retort before stiffening and closing it, her eyes averting to the side as she nodded in consent. "It is a pretty awful place sometimes but there are still moments where I can't imagine living anywhere else." Sans considered her words before shrugging his shoulders.

"Can't say I don't understand part of that but-" he paused and teleported them to Grilby's. "-anyplace that hasn't discovered hamburgers and ketchup seriously needs help."

0000

Frisk wasn't sure what to think of this dimension's Sans. For anything from his age, height, magic, and sense of humor was almost a complete opposite from the one she had been fighting and the only real correlation she could find between them was their lack of prober posture while standing or sitting.

Watching him get some food out from across the counter she briefly wondered when he would succumb to another anxiety attack and how on earth he could still function after suffering one a few minutes ago, was he just used to carrying on as if nothing was wrong? But as she watched him, with veiled interest, she found that trying to read a skeleton monster was a daunting task. Was his bad posture normal or just an effect from his mood? Did monsters not feel negative emotions for as long as humans?….No that wasn't it.

After all, the monsters from her home still hated the humans.

Looking down Frisk tried to fight off her sense of dread, hands twiddling in her lap as she tried not to clench them. There was still one monster near her village and even if he was only at 5-health she was still worried. What if he found one of the non-magic kids and figured out there was more than just 'one' human survivor? What if he found the village?

Forcing herself to swallow passed the rock in her throat Frisk tried to center herself. It was fine, barriers were set in place and if she didn't check in soon one of the others magic sentries would be sent out to find the problem and or help her.

"Kid?"

Blinking, Frisk looked up and saw Sans carrying two plates of, what she assumed to be, food. His eyes zeroed in on her in a way that made her slightly nervous.

"Yes?" She smiled, holding back her slowing fraying nerves and trying to keep from panicking. This wasn't the same Sans, he's like you only your worst fear is his reality.

"You look pale again…Something wrong?"

Frisk kept her calm smile in place and shook her head. "No I'm fine."

His sarcastic smile at that made her realize he had spotted her lie. "Well I'm fine too kid but you know the term 'fine' doesn't mean okay so I'll ask again," he set the plates down and took the seat beside her. "What's wrong?"

Frisk twiddled her thumbs and looked down, remaining quiet for several moments before speaking. "My…home….I don't know if their still safe….." She swallowed heavily. "My village could be…" Here she stopped again and tried to find a way to explain what the situation was like. "You know that girl you were fighting?" Frisk looked up at Sans then, her gaze serious when she said. "Imagine if you had a hundred of those coming after you." She turned away once more and began to elaborate. "Monsters back home aren't like you, there not….Nice. We've only been able to survive so long because for a while we made them think all us humans had been wiped out. But before I came here two of them saw me and…One of them is still there and he's really close to our village." Frisk's clenched her hands in her lap biting her lip as she tried not to dwell on the possible 'what ifs,' the Sans beside her quiet while she regained her composer.

Lifting her head Frisk stared at the plate of food before her, forcing her mind to focus on eating the meal rather than the problem of returning home. Taking the…Sandwich? Off the plate she began to eat, trying not to cough at the food's strange flavor. It wasn't bad but….well she couldn't decide if she liked it or not.

The atmosphere around them was quiet for several moments while Frisk and Sans ate before the skeleton spoke once more.

"So then how did you get here kid, what led up to you crashing through the air?"

Frisk set her burger down on her plate, her body leaning back in her chair while she tried to put into words a situation she herself barely understood. "We were fighting and…he was too strong and was going to beat me so I went to fall, I was halfway through when he grabbed me and…then the world was shaking and suddenly I was thrown though the air instead of popping up like normal."

The Sans next to her looked confused. "You fell on purpose?"

Frisk nodded. "Yeah, you know 'fall'? It's what we did when you brought us here."

The skeleton stared at her before shaking his head and grinning. "You mean teleportation."

"I mean Falling, though Dian calls it a doorway." The girl turned back to her food and continued to eat, spirit slowly rising as her health improved, her determination to make it back home rekindled.

"Hmm," Sans shrugged and went back to eating his food, the topping that he said was called 'ketchup' oozing out and onto his hands. "You sure you want to eat that burger plain kid?" he then asked, gesturing to the red bottled on the counter between them.

Frisk looked at the red bottle dubiously before shrugging and grabbing it, squirting a little of the product onto her burger. Taking a bite she chewed and then made a face, nose scrunching up as the even stranger flavor that was ketchup spread throughout her mouth.

"Heh, what kind of face is that?" Sans asked, his grin spreading as he watched the human's reaction to his favorite food staple, Frisk swallowed before replying.

"It's…sweet... Sour, and salty," She then turned to him in confusion. "How can you eat so much of it? It's so weird tasting."

Sans laughed and shook his head. "Weird? Kid you're talking to someone who drinks this stuff straight." Frisk blanched and released a shiver when the skeleton then took the bottle and downed at least half of its contents.

"No, Sans, gross." Looking away Frisk made a disgusted face, trying to ignore the skeleton beside her as she focused on finishing her meal, Sans just grinned.

They finished their food soon after and Frisk stood to leave before stopping, looking back at Sans she bit her lip. She knew he was alone here; the piles of dust and his cries during his breakdown were testament to that but….

"Sans?" The skeleton looked at her from his seat at the counter. "Is there anyone else down here, any other survivors?" His eyes dulled and Frisk kicked herself for asking when he was starting to feel better.

"No…After Flowey's attack with the souls and then the human…no one else but me is left."

Looking down at the ground she considered the offer she was about to make for a few more moments before saying. "Well, it might not work but," she turned her eyes back to his "would you want to come to my world?" The air around them was quiet before she added. "Of course you wouldn't have to stay with us humans if you don't want to, I mean, I'm sure if you acted tough the other monsters wouldn't bat an eye but if you wanted you could stay at Hidin Town also…" She kept eye contact for a few more moments before looking down. "A-anyway it was just a suggestion, if you don't want to its fine."

She heard him get up from his seat and finally gathered the courage to look up. He still looked surprised but had seemed to have gathered his wits. "I think I'd rather be okay than fine kid." Walking over he stood before her, hands in pockets and shoulders still slouched, when he smiled. "And going to your dimension sounds okay to me."

0000

Several minutes later they were once more in Judgment Hall, standing at the area where Frisk had come through; the human nervously turning to the monster beside her. "You ready?"She asked her magic swirling around the both of them in case of another rebound, Sans just nodded.

Breathing in deeply Frisk grabbed his hand and walked forward, her magic pushing against the air as she tried to go further than a fall, tried to break though the barrier that her and the other Sans had accidently crashed through.

She felt the barrier try to push her back and clenched her teeth, no. Glaring she took a step forward, her body feeling weighed down and the air around them getting thicker in preparation for the rebound that she was trying to fight back. But the barrier held and Frisk wasn't sure if she could manage another step forward.

So it came as a surprise to her when blue magic mixed in the air around hers and suddenly they were sent flying forward, the barrier breaking and letting them through.

Peach: Voila! Prologue finished. Okay quick heads up, next chapter will be [classified] and [classified] so [classified, classified, classified]. Well that's it, seeya next chapter!