Sans AU One-Shots

Killer || breaking point.

Pairing: Killer Sans x Reader
Prompt: After an especially long day, Killer's flirting pushes you to your breaking point and something important slips out. 
Type: fluffy, lil suggestive (this is Killer, m'kay?)
Length: 2k words
Background:
Notes: Requested by a lovely reader. | Do you guys like more bite-sized one-shots like this? (If 2k words is considered bite-sized lmao) Or do you prefer the longer ones (either 4k words or even the 6k+ ones)? I know I tend to write long ones cuz I take story length ideas and condense them, but I'm curious if y'all have a preference. 

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Nightmare had been talking for 5 years by the time he realized you weren't listening. A tentacle on his back flicked irritably as you leaned against Killer, who supported you with an easy smile and an arm around your waist, and while you were doing your absolute best to keep your eyes open, it was clear just how close to passing out you were. "I suppose it has been a long day," Nightmare grumbled slowly, resting his jaw on his fist as he used a tentacle to gesture towards the door to release you two from his office. "I expect your continued obedience going forward."

"Thanks Boss," you breathed, relief filling you at his kindness, and you tried to smile despite the clear exhaustion in such a simple action. Nightmare's teeth pulled back in a skeleton version of a snarl at your positivity but he said nothing, returning his eyelight to his work as Killer pulled you towards the door.

"You're the best, Boss!" Killer said in a sing-song voice, making Nightmare glare at him. But Killer only snickered as he shut the door, taking your hand and pulling you with him down the hall towards the living quarters of Nightmare's castle. You'd been part of Nightmare's gang together for years and as such had grown rather close to all of them - especially the one attached to your hip. It was rare for Nightmare not to send the two of you together on missions just because he knew there was a chance Killer wouldn't mess around if you were with him - though why you being around meant Killer would stay in line you couldn't begin to guess - and today was no different.

"I swear he was trying to see how fast he could get you to fall asleep," Killer joked, the hand not holding yours playing with his knife expertly while he glanced down at you, his teeth in a wide, charismatic grin.

You sighed, running a hand through your hair. "I was trying so hard to listen." Your smile was awkward, even now still struggling to hold onto your awakeness.

"Not your fault he purposely makes the debrief as boring as he can." Killer slammed open his bedroom door, pulling you inside and kicking it shut behind you. "He's anti-fun." 'Anti-positivity' was more accurate, but it wasn't like Nightmare had much of a choice. Killer winked at you as he tossed his knife at a target, sticking it right in the bullseye. "You're lucky you're cute when you're tired or Boss would've yelled at you for not paying attention."

You laughed at that. "Or he's just tired and didn't want to deal with you any longer than he had to." Your best friend made an exaggerated surprised expression, putting a hand on his chest like you'd deeply offended him, but you were already maneuvering through the mess of knives and other various sharp objects scattered across his bedroom to make your way to his bed, where you flopped on it and winced. "Agh, I forgot about that." You rolled onto your side, lifting your shirt to see a cut on your stomach. It was shallow but still bleeding, and you sighed, slumping further onto the bed. You were too tired to deal with this right now.

"I got you, darling!" Killer swooped in immediately, pulling out a first aid kit you made him keep in his room for your own peace of mind - his entire room was sharp and you worried for him, ok? He pushed you back onto his bed so you were lying down on it properly then lifted your shirt much higher than it needed to be, using some gauze to pat the wound and collect the excess blood. You grimaced but kept quiet, and he worked quickly like he'd done this hundreds of times. Even though he had no eyelights, you could definitely tell his empty, inky black sockets were checking out the little bit of bare skin he could see.