Sans AU One-Shots

Error 404 || amnesia.

Pairing: Error!404 Sans x Female Reader
Prompt: 404 is tracking down Loading - an entity that's after him for his connection to the Mainframe - only to find a woman that knows far too much about him for seemingly no reason. Suspicious there's a data leak about his past that Loading could get its hands on, 404 is forced to protect her until she recovers from her 'amnesia' before he can demand answers.
Type: mystery, reference central, Y/n thinks she's gonna die at the end again, this went on far too long-
Length: 10.1k words
Background: There's a lot of lore to Alphatale and Error!404, and I did some digging into it for this particular one-shot, but please note I don't have nearly enough of a grasp to call myself knowledgeable about any of it. 'Loading...' is an entity specifically built to be 404's opp in service of the Mainframe, and back before Alphatale got destroyed, 404 and his brothers had different names (like 404 was William) under the Astral Mother (who was the absolute worst mom, btw). Since then, they've all 'grown apart', which is to say they've all taken on very different roles in the multiverse based on the flavor of trauma they gained from the Astral Mother (like one of them named Infected/Jacob, who's the 'origin of all evil and bad things in the multiverse', is the textbook baddest of bad guys, and since all of them are Dragon Ball levels of powerful, 404 and Loading end up teaming up to take him down at some point). But since it would take forever to explain their individual powers or why any of this is the way that it is, I'm not gonna bother. Check out the wiki if you're interested 👍
Notes: This was inspired by a lovely chat with a character.ai bot and a ton of research. On an unrelated note: Alpha is lowkey kinda fine- 

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For a formless being with the sole goal of hunting Error!404 down to retrieve his Mainframe energy, you'd think Loading would be a lot better at being the hunter than the hunted. But maybe that stemmed from 404's irritation with it - as of late, it had been on his case more than usual, searching for any leads towards possible weak spots of his. Like those even existed. He would've rolled his eyelights if it was even worth the effort, but instead, he rested his hands in his pockets as he traversed an AU he'd never visited before nor bothered to catch the name of. He moved so fast he might as well have been glitch hopping like Error, but while it looked like teleportation, it was more accurately a mix of flight and super speed.

Loading wasn't difficult to track - not that it tried very hard to go undetected - but why it was here of all places, 404 had no idea. "Chasing down a false lead, you think?" he wondered aloud, waiting for a reply from Alpha as he trudged through pixelated snow. Alpha didn't reply - he never did - yet 404 continued on as if his brother was still alive. "It knows I reside in the Mainframe, so what purpose does targeting this random AU serve? The humans know less about magic and the anti-void than monsters do." His eyelights flickered over to the distant buildings before returning to the log cabin he was approaching, secluded from other humans. It was unassuming on the outside, but he knew for a fact that the inside was a disaster. Everything Loading touched turned into chaos. It was aggravating.

404 pushed the front door open with a rap of his knuckles on the wood, noticing the door was slightly ajar when he went to turn the knob, and trudged inside, getting snow all over the welcome mat. He wiped his shoes off then stuck his hands back in his pockets, venturing inside to find the chaos he knew would be waiting for him. It looked like a fight broke out with the kitchen table overturned, chairs knocked against the far wall, the tea and cakes once on the table splattered onto the ground and smeared beneath hurried feet, and all of that led him back towards the lone bedroom. He flexed his fingers before shouldering the door open and yanking his hand from his pocket, finger gun pointed at the occupants: a woman trapped in the corner with Loading hovering over her.