AU Undertale one-shots

Underfell Sans x reader

You sat on the couch kinda board. "Heh, whats got you lookin' miserable." Sans taunted walking into the living room. "Nothing, just board." You say. "Why don't you go 'flirt' some more mosters into your f*ckin' positivity." Sans growled. You ignored him. "I'm talkin' to ya, pest!" Sans said and flicked your fourhead. "Ow, hey!" You put a hand on your fourhead. "Thats what you get for ignoring me pest." Sans says sitting on the other side of the couch. 

You sat there watching the TV along with Sans. You stayed as far away from him as possible. You had got him to not kill you but that didn't mean he would stop being a jerk to you. You felt a pare of eyes on you, and glanced over to see Sans staring you with a red hue on his face. He turned away and looked at he TV. The red hue growing a bit brighter. Was he blushing? You didn't know. Papyrus then came downstairs. "SANS GET OFF YOUR LAZY *SS! IT'S TIME FOR WORK!" Papyrus shouts. Sans stood up immediately and fallowed him out the door.

You stayed sitting on the couch for the day and watched whatever was on TV. Papyrus was out doing his job. Sans was somewhere, so it was just you at the moment. It was getting late so you weren't going to be by yourself for much longer. Suddenly, Papyrus burst through the door dragging Sans by the jacket hood. "SANS I CAN'T BELIEVE YOU FELL ASLEEP ON THE JOB AGAIN! I DON'T WANT TO SEE YOU RIGHT NOW!" Papyrus shouts and let go of Sans roughly. Sans stumbled and stomped off to his room. Papyrus sighed. "Sorry about that, (y/n)." Papyrus said and went into the kitchen. 

You looked up the stares and decided to go see Sans. You walked up to Sans room and knocked on his door. No answer. You knocked again. "GO AWAY!" He yelled. You sighed and turned the door nob which was surprisingly unlocked. You slowly walked inside and saw Sans on his bed, hugging his legs and hidding his face. You walked over and sat down next to him. This alerted Sans and he sat up quickly, his eye glowing a furious red. When he saw it was you the glow died down. "What are you doing in here, I thought I told you to go away!" He said turning away from you. "Sans, I know your brother can be harsh but I sure he cares about you..." "NO HE DOESN'T HE NEVER DID!" Sans yelled. You stood up and walked out the door. "W..wait.." Sans said but you didn't hear him. Sans thought he had scared you off. 

You went into the kitchen straight to Papyrus. He turned towards you. "Yes, (y/n)?" He asked. "Why do you treat Sans so harshly?" You asked. Papyrus tenced up. "Because he needs to toughen up!" Papyrus said harshly. "Being mean isn't the only thing that makes people strong." You say. "I doubt that there is one being in this world that would win a fight being nice!" Papyrus said. "Ahem?" You said tapping your foot. Papyrus then got it. "Oh, right, you are that one being." Papyrus muttered. "Exactly, now I'm going to go get Sans and you are going to apologize." You said. Papyrus huffed and crossed his arms stubbornly. "Please?" You ask. "Fine." Papyrus gave in. "Thank you." 

You went upstairs and back into Sans room to he he was crying. You sat down next to him again and pulled him into a hug. After a few seconds he hugged you back and nuzzled his head in the crook of your neck. You blushed and continued to hug him. After what seemed like forever you pulled back and looked at him. "Hey, it's alright, why don't we go downstairs for a bit." You say standing up. Sans grabbed your wrist and sat you back down. "(Y/n), I want to tell you s..something first." Sans said trying to put on his tough act again. You stared at him, waiting. "I..I love you." He says a bit nervous but still trying to look strong. "Sans....I love you to!" You say kissing him on the cheek. He blushed but then smirked and kissed you on the lips. You blushed madly but soon kissed back. He held you by the waist and pulled you in closer. You felt something move across your lips, asking for entrance. You pulled back. "Don't get ahead of yourself now Sansy~. " you say blushing. Sans blushed to but still smirked.

You two had began to walk downstairs. Papyrus was there waiting. Sans tenced up but you held is hand. Both of you got to the couch and Papyrus cleared his 'throught'. "Sans. I wanted to..apologize for my behavior to you for the past years. I had only wished to make you tough so that you wouldn't get killed by others." Papyrus said. Sans jaw almost fell to the ground. Something you had unexpected happened. Papyrus hugged Sans. It didn't last long though. "Uh, thanks bro." Sans said. Papyrus nodded and went upstairs. "What was that about?" Sans asked. "I had a talk with him." You say. 

It was late and you and Sans sat on the couch watching, you gessed it, more TV. As you sat there Sans scooted closer to you. You hadn't noticed until he had his head in your lap. "Sans? What are you doing?" You asked, he didn't respond. You sighed and traced small circles on his skull. Sans had a small smile and a bit of a blush. 

After a bit you stopped. Sans suddenly held onto you and flipped so that you were on his lap. He hugged you tightly and nuzzled you again. He gave you a few kisses on the neck. You blushed but soon relaxed and eventually fell asleep. Sans looked down at you and blushed a small bit at how cute you looked. He was the happiest skele ever.