AU Undertale one-shots

Chill! Underfell! Sans x Reader

All the monsters had made it to the surface. You had set them free. Toriel, Asgore, Undyne, Alphys, Papyrus, and Sans all live in a large house, along with you. You have had a slight crush on Sans for a long while. Sans used to be anxious and grumpy but now he was a lot more. . .chill. He also had changed his style. He now wore a black, leather buckle jacket, dark jeans and black buckle boots. You and Sans were sitting on the couch waiting for the rest to get ready because all of you were going to Grillby's that night. You glanced over at Sans. He looked completely calm. Being around him just made you so comfortable. 

"I am ready, where are the others?" Papyrus asked. Sans shugged. "Right here." Undyne said with the others behind her. "Alright then, lets go." Sans says. You all got up and got to the van. It was large enough to fit everyone. You were going to sit by Sans ut Undyne sat in the middle of you both. Sans leaned against the side and looked out the window. You sighed and leaned against the side as well. You had ended up falling asleep.

"Hey kiddo, were here." You heard Sans voice. Your eyes flutter open to see Sans. Everyone was out of the car and entering the Grillby's. You yawned and unbuckled fallowing Sans out of the van and into the building. This place was way bigger than Grillby's old place. The lighting was mostly dim and the smell of food, cigarettes, and alcohol. It was slightly cold in the place making you shiver a bit. Most sat at a table while Undyne sat at the bar. Papyrus was over playing at the pool table. Sans sat at the table with Alphys, Asgore, and Toriel. You just sat at the table as well watching the others.

One by one the people at the table left to go do whatever. Toriel went over to the juke box then some random monster started to flirt with her and Asgore went over there. Then, Undyne got to drunk and Alphys had to go stop her from punching a monsters lights out. Sans moved over to a booth close to the table to get more comfortable. That just left you at the table. You laid your head down on your arms resting your chin on them.  Sans had a toothpick hanging from his mouth as he watched the others. You sighed softly in the relaxing atmosphere but you couldn't help but feel a bit sad because you wanted to be closer to Sans. 

Sans must have noticed your small sigh because he turned to you. "Whats up kid? You look tired." Sans says. You just give a small, light huff. He just chuckles quietly. You begin to close your eyes but a cold breeze swept past causing you to shiver. "Ya cold kid?" Sans asked. You nodded a bit. "Comm'ere." Sans says patting the space on the other side of him on he booth. You slowly get up and sit by him. You can fell a bit of heat radiate off of him. You scoot close and rest your head on his lap. Sans just smiles a bit and rests his hand on your sholder. You soon fall asleep. 

You could kinda feel yourself being picked up like a child would, by Sans. Fading in and out of awarness you could tell you were in a car leaning on Sans. Then you were being carried again. You soon gained most of your consciousness and felt yourself being placed on the couch. You opened your eyes a bit to see Sans start to walk away. You sleepily grabbed the back of his black jacket. "Nuuuu, don't leave." You say. Sans chuckles again and scoots you over. He sat on the couch and turns so his back was leaning against the arm rest of the couch. The then pulled you to him so that you were laying on his chest. 

You closed your eyes and just enjoyed the calming warmth. Sans began to stoke your hair. You faintly heard him say something but were able to make it out. "I..I love you, (y/n)." Sans said. You smiled a small bit and blushed. "I love you to Sans." You mumble just loud enough for him to hear. You couldn't tell but Sans had a light red blush on his face as he smiled down at you.