Mustard and Ketchup

Chapter 1

Sans might seem like the laziest monster ever, with his constant nap talking and lack of enthusiasm believing the small skeleton monster had goals or hobbies was almost impossible. Heck even his brother would be shocked at said news. However, Sans did spend the free time he had when he wasn't being watch to go work down in his lab in their basement. The basement was obviously kept locked and a secret from nearly everyone, which was another reason why Sans had to go there were others wouldn't notice of his disappearance. Luckily with someone like him his low reputation made it easy for him to slip away as he pleased, a pro to his famous lazy role.

Down in the lab, the skeleton spent his time working on a piece of machinery, what he called a transporter. His idea? To make a transporter able to get them to the surface, so monsters could be free. Of course he was planning that if it worked he would send Undyne or a guard to get human souls, since transporting all monster kind on a single device was a matter much to complicated and overwhelming. 

He had started working on it ever since he aqquired the household, going down whenever he could while making sure to care for his younger brother. Now that Papyrus was more mature, however, he had plenty more space on his plate to continue on the project. Had taken a couple of years but hey, engineering and science didn't happen in a snap. And as Sans put the past pieces together, he flipped the handle attached to the side of the machinery and grinned as it whirred to life. Taking off his lab coat and putting his hoodie back on, he stepped in front of said machinery as the door slid open to his prescence. Now for the risky part, the test. As much as Sans hated to admit, he wished he could have some other monster or colleague to try instead of him, after all there was no reassurance that it would work. Heck didn't help his HP was literally 1, so any hard damage could leave him severely wounded or dusted. Still, telling anyone else of this could lead to questions, and who would be up to the job? Being a lab rat wasn't a very pleasurable employment, especially when it came to testing a sci-fi level of equipment. So it was up to him to take that burden and do it himself, for monsterkind to finally be free from this subterranean prison. Taking in a deep breath, he stepped inside, feeling as smoke filled the small cabinet and the door slid shut. Taking in the amount of space, he began to think that Undyne probably wouldn't fit here, or any Royal Guardsman to begin with.

But before the latter could even begin pondering on the though, the machine began to shake as more smoke filled the cabinet. Sweat beaded down his skull as his eyelights flashed left and write, coughing up a bit as the cabinet filled with more smoke. Was this normal?! Was this suppose to happen?! Every instinct told Sans to run, to teleport out of here and shut the machine down. This was the basement to their fricking house after all! Then again, wasn't this an experiment? Wasn't the purpose behind this to see if the machine worked, to test if all the wasted time was worht it? The questions swarmed in his head worse than angry bees as he tried to quickly make up his mind. But before he could even blink, the machine shook violently as it knocked him off balance and towards a wall, knocking him out of conscience as everything turned black.
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He groaned, nauseous as he opened his eyes slowly and tried getting up. His body ached, especially his skull as he pushed himself up to his knees and slowly stood up. The world seem to spin as the skeleton struggled to stay standing. As he stumbled and shook his head again, he clutched the part where he had hit his skull, feeling for any cracks that may have formed. Luckily he probably felt maybe a bruise, for his fingers felt no indents or splinters. Having that out of the way he looked around to check what had happened, and more importantly, where he was. Feeling wetness he realized how he was covered in, snow? Shaking it off, he turned to better see his surroundings, his eyelights widening at seeing the familiar Snowdin trees. No, it couldn't be. Maybe it was winter on the surface and he had just landed on a trail leading up the mountain, that just had to be it. But as he turned, he saw the all too familiar ruins door, with the runic on the top, there was no mistaking it. He sighed in defeat, rubbing the spot as he mentally cursed himself for nearly dying with no reason. Kicking some snow as if it were the cause, he turned and began heading home, already hearing the fit Papyrus would have at seeing the bruise. Hey at least he would heal him up and he wouldn't have to deal with that pain.