Sans AU One-Shots

Fell || innocent.

Pairing: Underfell Sans x Female Reader
Prompt: The underground is an edgy, hostile place that (Y/n) just isn't made for, but despite her insecurities, Fell wants to keep her innocence because it means more to him than she knows.
Type: fluff, near constant swearing (Fell needs to rinse his mouth out with soap)
Length: 2.7k words
Background:
Notes: Writing this, I kinda realized I did Fell a disservice in my Fell x Reader story. I (and many other people) label him as 'dumb' because he's brash, rough, rude, swears a lot, etc, but he's a Sans. All Sanses are actually pretty smart and come off as [fill-in-the-blank trait of each individual Sans - like lazy for Classic] because that's the impression they want to leave and they don't want you to look beneath the surface at the real them. So have a more canonically accurate depiction of his observation skills and not so empty skull <3 | Requested by sighnerd. 

~-~-~-~ 

You walked into Grillby's, eyes instantly locking on where Sans sat at the bar. He was engaged in a conversation with Grillby, the purple flame monster's customarily blank expression apparently the perfect wall for a drunk Sans to bounce a flurry of words off of. The cold of the snowy wonderland outside was sealed away with the slam of the door behind you, but with such a sharp sound cutting through the chill of Grillby's, all eyes were immediately on you. You shrunk back instantly, mumbling a 'sorry' loud enough for almost everyone to hear.

You headed towards Sans but your foot caught on something sharp and you tripped, face planting into the hardwood floor with a yelp. A dog monster sniggered as he moved his ax back against the table, watching as you picked yourself up. You dusted yourself off, wincing when you spied your scraped knee. Great. You took another step and instantly yanked your foot back up like the floor burned you, suddenly understanding why your foot felt chilly. The ax cut into your shoe and your foot felt wet - was it bleeding? You already wanted to run for the door, the leering looks from the other patrons making you hurry towards Sans.

But you bumped into another monster you swore wasn't there a second ago, and you squeaked as they turned to glare down at you. "I'm sorry!" you said instantly, putting your hands up in front of your face. You swore you felt the heat of fire magic before you felt a bony hand grab your arm and yank you away.

"Leave the girl alone, fucker. She's with me." Sans' slurred speech stopped the monster in their tracks, making them scoff as they turned back to their drink that you hadn't even spilled. You were so puny they probably assumed it was a small breeze against their back, and while that sounded pathetic, at least you didn't cause them to lose any of their drink.

"Thanks Sans," you whispered as you sat down on the barstool next to him. He gestured vaguely with his mustard bottle, what he was trying to communicate was anyone's guess, and you looked up at Grillby. He was imposing and his purple fire burned hot, and your eyes nervously darted away as he waited impatiently for you to speak.

"You gonna order?" Sans asked gruffly, resting his skull on his hand as he looked over at you. "You know Pap's lasagna is shit. If you don't get something, you're gonna go fucking hungry tonight."

"I'm thinking," you protested, the pressure on your shoulders making you sweat - or maybe that was just Grillby breathing down the back of your neck. You knew you were the center of attention in the bar and grill - you always were when you were in here with Sans, like the other monsters were just waiting for the opportunity to make you scream again. Sans had made it clear early on that you weren't to be killed since he made a promise to Toriel, but scaring the living daylights out of a scaredy cat like you was easy when you were a complete pussy. You couldn't help it; you weren't made for the edgy and hostile underground you fell into, and the fact that you were even alive at all was nothing short of a miracle. You had Sans to thank for that - and Papyrus, who inadvertently kept the others off your back by claiming you as his ticket into the Royal Guard. So you clung to your protector because you knew you didn't have the strength to escape the underground - you barely had the strength to walk to Grillby's alone, so what hope did you have of escaping this hell?