Underswap x reader collection

UnderSwapped!Sans X Reader (Smut/Lemon) FINISHED

Authors note(yes we all know everyone hates these, don't be alittle bitch)
Now, yes. I know it took meme like what? Over 6 months almost, just to post the FIRST REQUEST? We'll that's because I've NEVER written an XReader before. So this is the first xReader I've actually finished because I've always thought that if I ever would write one, that I would make the character the reader's suppose to be with OCC as fuck. So mind me if I made Blueberry abit to unlike himself, I don't like to write fanfics that don't involve myself or my ocs because I don't know the characters personality by heart.
ALSO.
The reader in this, is gender neutral. So if you're a guy or a girl. Good for you, you participate in sin with the blueberry.
Now ENJOY YOU FLITHY SINNERS.

"Ya! Spontaneous move, Sans! Do it again!" You cheered, clapping your hands together as the blue schemed skeleton showed off his signature blue move. Sans usual grin became wider at the nice complement from his friend. "An encore you say? Well of course!" He beamed, his magic eye glowing blue as some bones were lifted into the frosty air, then swiftly plummeted to the ground. You watched in amazement at the movements, your eyes glittering at every swoosh and glow, but unfortunately, you were too distracted to even noticed the stray object that was heading straight for you. It was until Sans actually yelled "Watch out!" That you noticed it coming towards you. Gasping as it struck your side, you stumbled back from the impact, falling into the icy snow. Sans ran over to you, getting down onto his knees to your side."____! A-Are you ok? I-I'm so sorry! I should've watched where I was aiming!" He cried, hanging his head down after he was finished his apology. You sat up, wincing in slight pain. It was just a bruise. Or at least that's what you assumed."S-Sans it's fine.." You whispered, gently taking his hand in yours. You place your other hand on what would be his cheek if he had flesh."I promise I'm fine.." Trying to convince him that he did nothing wrong. Sans sniffled, looking up."b-but I attacked you.." He whimpered, being all cute n stuffs :3. "It was an accident Sans.. I'll be ok.. L-let's just get back to snowdin and have some tacos.. ok..?" You said, pulling him into a hug. Sans blushed some but nodded, pulling back. "ok.." he said, helping you up as he stood as well. You both walked back to snowdin, Sans supporting you along the way. After all, you still had a horrid pain in your side.. When arriving to the house, Sans noticed that Papyrus wasn't home. He must've been at Muffet's again. He sat you down on the couch, making sure you were comfortable. "I'm going to go get you some ice for the pain.. You can watch some T.V if you want.." He attempted a smile, but you knew he still felt terrible. If only you had been paying attention. No, it wasn't your fault.. Or his. It was just an accident. Still. You wanted to make Sans happy. That's when the idea came to mind. It was going to be a hard job, that being you were in pain, but you could keep your movements gentle and sweet. As soon as Sans came back, you hard already had your shirt off, your cheeks burning from embarrassment at how suggestive you looked right now. "_____, I got you the ice-" He stopped upon seeing you shirtless, his cheekbones growing a blue tint to them. "__-_____! I-I'm sorry! I walked in at the w-wrong moment.." he stuttered, the tint becoming bluer. You laughed lightly and smiled. "N-no, Sans , it's fine.. I need to do this anyway to have the icepack.." you said softly, having your hand over the bruised area. Sans sighed and walked closer, sitting next to you. "alright.. but I strongly recommend putting your shirt back on soon. You'll catch a miserable cold!" he said, gently moving your hand to hold the icepack on the bruised spot. When the cold touched your skin, you let out quite a lewd whimper, showing your small approval for the action. Sans stopped, hearing the reaction, the blue returning to his cheekbones and this time, a slightly warm feeling beginning to tingle his bones. "A-are you alright? Did I hurt you?" he said, a little flustered. You looked up at him, smiling. "No.. I'm just fine.." you said, moving so that you were on his lap, straddling. "C-Can you distract me from the pain Sans.." you whispered in the same tone when you whimpered, your hand finding itself on top of the skeletons gloved one, which was holding the icepack. Sans's face grew hot, realizing the situation he got himself into. "I-I-I.. uh.." Before he could finish, you pressed your lips against where his would be, wrapping your arms around his neck while pressing your chest up against him. He was startled at first but just gave in, calming some. You pulled back, blushing, expecting him to be hysterical about the sudden action but.. He was actually quite calm about it. To your surprise, he stood up, carrying you in his arms."L-let's.. Continue this in my room.." He said, his cheekbones shaded blue. You smiled and giggled, gently kicking your legs back and forth as he carried you up the stairs and to the room at the end of the hall, which Sans resigned in when he wasn't out or wasn't watching T.V downstairs. He closed and locked the door when he got into the room, then proceeded to place you down gently onto his bed."N-now..I-I don't exactly know.. HOW to distract you.. from the pain.." He said, all flustered and such. You just smiled and placed an innocent kiss on his forehead."Then I'll lead.." You whispered, taking his hand and putting it on your hip as you straddled him. You leaned down, undoing the scarf that was around his neck, smiling as you kissed along the exposed vertebrae. Sans shook softly, not being able to hold back the mewls that was caused by your teasing lips. You giggled, shifting your hips as you sat up, being positioned on his lap comfortably. It was then that you felt something... Bulging from the skeletons pants. In curiosity, you look down to see what it was you felt but only saw a teal glow coming from the area. Sans face become engulfed with blush as he quickly gained your attention back by pulling you close to him and shoving his face in the crook of your neck. To your surprise, you felt something..slimey and wet.. A tongue was it? You didn't care, all you knew was that it felt good and sent warm waves to the heat between your legs. Shivering, you let out a moan as you felt Sans lightly nip spots on the open flesh, whilst bucking his hips up into yours to get some kind of friction. You wanted to try and please him to the best of your ability despite being in mild pain, so you pushed off his lap and simply sat infront of him, your delicate hands going to work as they undo Sans' pants. What you saw pop up, made you blush but also made you more excited then you already were. A short but thick, glowing teal cock, quite cute and the perfect size in your opinion. You notice Sans let out a whimper as he bucked up slightly when your fingers brushed against the shaft, wrapping them around it. You slowly start to move the hand up and down softly, quite pleased with the reaction you earned from the smoll skeleton infront of you. Being alittle more bold, you lowered your head and licked the plump tip, before wrapping your lips around them, teasingly sucking softly."a-ahh~!__-_____....p-please..more..i-it feels so good!" Sans moaned out, leading you to believe that it was time for more than just teasing and foreplay. You pulled back and sat up before sliding off the bed and taking off whatever you wore for pants and underwear, making the skeleton blush even brighter than he already was. It made you giggle, really. To think that you were every going to do this with the precious blueberry. You were eased by this thought as you crawled back onto the bed and onto Sans' lap, your entrance just hovering over his throbbing cock."you know... I've actually wanted to do this with you for a long time now... I guess you could say I used the whole injury thing as an excuse to do so..." You admitted, your voice soft and gentle. Sans looked up at you, his teeth forming into a happy grin."r-really?? Y-you didn't have to use that as an excuse.... Infact.. I-I can admit the same thing,_____.. I've wanted to go on a date with you for around the same amount of time you described.. B-but I was confused about these feelings.. I didn't know if they were just the same feelings I felt for any other one of my friends and Papyrus.. Or if it was something more.. So I just kept it to myself.." He explained, looking away for alittle as he did so. "b-but I'm so happy you feel the same..!" His added sentence was cut off by you pressing your lips against his teeth, tears of joy welling up at the corner of your closed eyes. It made you overwhelmed with happiness to now know how he felt all this time, that he felt the same or at least close to the same, you couldn't quite understand. When you pulled back, you were smiling, needless to say and so was he."would you like to continue?" You asked softly, wiggling your hips in anticipation. It took him a second but then he realized what you meant and blushed."s-sure.." He answered. Goodness, he was so cute you could just eat him up. You giggled and lowered down onto his awaiting length, sheathing him completely inside you. It was painful, but it felt good to be this close with Sans. You heard him whine with pleasure as your walls squeezed around him, already rubbing the right places. After what seemed like hours to you two, you started to move yourself up and down, riding the thick cock below you. Sans moaned in surprise at the sudden movement and placed his hands on your hips, helping with the movement. You panted, letting out gasps every now and then when his tip brushed up against the sensitive bundle of nerves inside you. It was then that he actually adjusted to hit the spot, that you started to be loud."o-oh..g-g-god.. S-SaAHh~!" You cried, your arms making quick work to wrap around his neck to hold on while you enjoyed the ride(damn right a pun). Sans let out cute whimpers and cries as he became more rough with his thrusting, wanting, needing more of you. The pleasure wracked your whole body, pulsing heavy in your veins and nerves, driving you insane. You knew that if he kept this up, you would lose composure and soon cum, but you couldn't help but drive your hips down to meet his core shaking thrusts that drove deep into your sensitive inside. As you began to loss yourself, Sans' voice snaps you back to reality."___-_____..! I-I'm about to..!" He whined before releasing himself into you. The overwhelming feeling of being filled to the brim causes you to meet your end as well, whining out his name. You panted and let out small moans as you calmed down, keeping still on his lap to prevent any movement to your overly sensitive body. Sans rested his head on your shoulder, moving his arms so that they were wrapped around your middle. He let out a content sigh as he finally came down from his high, nuzzling into the side of your neck lovingly. You smiled and placed a gentle kiss on his cheekbone before cuddling close to him. You were satisfied with how things turned out but not only that, your pain was finally gone.