Underfell Sans x Skeleton Reader

A day together

You woke up to warm beams of sunlight on your face. It took you some time to get used to the lighting but when you did you emidietly realised that this wasn't your room. As you looked around you saw a snoring Sans who was lying in bed next to you holding your hand. The situation you two were in made you blush. You remembered that you had passed out on the couch while watching a movie. Perhaps Sans carried you up to his room. You lay down but accidently caused Sans to wake up. He looked at you with tired eyes. "Good morning." you greeted the skeleton. He yawned a, "Mornin' " and layed back down next to you. Both of you stayed in bed looking at each other for a while. It was really nice and peacfull until the door opened with a loud bang starteling the both of you. Papyrus walked in and yelled, "SANS, GET UP YOU LAZY TRASHBAG AND GET TO YOUR POST!" then he left. Sans sighed and stepped out of his bed. "I'll be back in a sec." he said and then he left for the bathroom. After you got over that little shock you got up as well. You looked at the bed. It was a true mess even messier then yours back home, so being the kind person you are, you decided to make Sans' bed as a little thank you for letting you sleep with him. When Sans got back he was surprised at the sight of the tidy bed. He gave you a thanking look before looking at the ground and saying: "I have to leave for work and i was wondering if you want to..... you know..." You saw him blushing but you know what he was trying to say so you finished his sentence for him, "If iwanted accompany you to your work. Of course!" You smiled and he was extremly happy, but of course he wouldn't show that. He grabbed your hand and led you downstairs into the kitchen. Papyrus was sitting there, eating his breakfast. His mouth was full but if he could have, he would have made a comment about Sans. Said skeleton looked inside the fridge pulling out a few pancakes. "We don't have anything better to eat. I hope this is okay." You smiled and told him that you loved pancakes. He took out two plates and placed one in front of you and the oder infront of him. The whole time you felt tension in the air and you did not like it. You grabbed a pancake and started eating, it was really good. You noticed Sans staring at you. It wasn't anything strange until you noticed his normaly red eyes were a little pink. Why were they pink? Questions and possible answers were going around in your head. So you didn't notice when Papyrus stood up and walked behind Sans until.. *SLAP* Sans' head landed in the pancake on his plate. "GET YOUR LAZY ASS MOVING! " At that moment it took all of your energie not to shoot up snap at and smack him, instead you turned to Sans who was holding his skull. You turned his head to see a small crack on Sans' forehead. It looked highly painfull. You touched it, to try and examine it but he hissed in pain. You pulled back and appologized. "Do you want me to heal it?" you asked quietly. He tried grabbing your hand but failed, you understood what he wanted and you took his hand, which was desperatly trying to reach yours, and began healing him once again. The crack slowly disappeared, he let go of his head and tried to regain his bearings. "Better?" you asked and he nodded slightly. "We better get going before my bro comes back." Just then you noticed that Papyrus was nowhere in the kitchen. Lucky for him, if he was you would have dusted him for hurting his brother. The fact that he was Sans' brother bothered you more. Sans led you outside holding your others hand. You started walking in the direction of his post. Saddly your walk was silent. Once you arrived at the post Sans took a seat and you leaned against the wooden structure. A few minutes pasted. Sans was asleep and you were bored to death, when suddenly an idea hit you. You smacked the surface his head was lying on. He woke up from the shock. You appolagized in an energetic voice. "What got you so hyped?" You got leaned over to him, "You showed me around the place you live in, right?" He nodded with clear confusion. "Well, now it's my turn to show you my place!" He just shook his head then layed back down. You stood there confused and still super hyper. You didn't understand why he laid back down. He sighed before saying: "I can't. I must stay at my post in case a human comes by or boss will have my head." You insisted: "There will be no human today!" He looked up with a questioning face: "How would you know that?" "I just do okay, trust me!" You couldn't stand still anymore and were moving from one foot to the other completly energized. Sans let out a small chuckle: "Can you see the future or something? heh." He chuckled again at his thought, until he saw your face turn serious from the question. "Wait! You can!?" he stood up and walked over to you. "Okay, yes, i can see the future sometimes if something interesting is going to happen, like a human for example but believe me if i say there will be nothing today." He was looking at you in complete disbelief. You looked at him with pleading eyes to believe you. He sighed and his confusen died down a little. "Okay." You tilted your head in confusion. "I believe you, so what did you want to show me." After his words a giant smile got onto your face, you grabbed his hand and headed towards the forest. Sans got a little worried but decided to trust you. You dragged Sans deeper into the forest, knowing exactly where you wanted to go. The forest was quiet, but it was a pleasant silence. It was a comforting feeling to be between the trees and to know your way around again. A few minutes of you dragging Sans through the forest you suddenly stopped and Sans bumped into you. You chuckled and turned back around only to be faced with a giant cave opening. Sans noticed and looked at the cave, than at you and than back at the cave. His face was filled with fear and concern, yours, on the other hand, was filled with joy and pride. "What's this?" He looked at you, you could make out fear in his voice, even though he tried to hide it. You, still being full of energy, started explaining fast and loud. He put up his hands in a defense like motion: "Whoa there! Slow down." You took a deep breath before starting anew. "I found this cave a long time ago. I was curiouse so i explored it. Since then it has been my place to go to, whenever i needed some silence to think. And the reason for that is because....." You stopped to think a little when an idea crossed your mind. You smiled: "How about i show you why i like coming here?" He hesitated but nodded anyway. You led him inside the cave. It was slowly turning black around you the deeper you went. The cave was pleasantly cold and completely silent. No sound, exept your footsteps. Sans had gripped your hand tightly, not intending to let go and get lost. "A-Are we l-lost?" Sans' eyes were a faint red, filled with fear. You smiled at him, hoping he would see it. "Don't worry. A few more steps." He seemed to have calmed down a tiny bit. You felt comfortable, relaxed and secure. Suddenly the cave was lit up turquoise by crystals. Sans was in awe. You giggled at his face and continued your way forward. While walking you were explaining to Sans: "These crystals light up when a soul gets near them. They're pretty aren't they?" Sans was still mezmerized by their glow. His mouth was wide open and his eyes wide. His pupils were reflecting the light inside the cave. Finally you reached a giant cavern. It was filled with those crystals. There was a giant lightbluely luminating lake. Sans stopped and let go of your hand. You turned around to see a Sans who's jaw had droped wide open, looking at the walls and ceiling. You followed his look and smiled at the paintings covering all the walls. "I sometimes paint here a little with illuminating colors." You smiled shyly: "They are not that great." Sans grabbed your shoulder starteling you a little, "Are you joking!? They are beautiful!" You looked to the ground and smiled shyly: "Thanks." He walked over to one of the walls. He staired at a painting of an angel, then continued to look at another painting. He stared at every painting admiring each and every one of them. You just stood there, not moving, merely following him with your eyes. When he finished he walked over to the lake staring at it. You finally joinned him. You asked shyly: "Wanna go for a swim?" He looked at you: "I don't have any clothes for swimming." You turned your head away from him and whispered just loud enough for him to hear: "It's not like anyone will see us here." He blushed when he realised what you were trying to say. He blushed red and asked you: "Soooo, naked?" You shrugged and nodded still looking away: "Why not." He turned around, away from you, and both of you started to undress without looking at the other. Once you had finished you turned around only to see a fully naked skeleton with a red blush. His bones had cracks in them everywhere but except that they were pale white. You blushed aswell. You managed to tear your eyes of Sans and walked over to the lake, slowly walking deeper into the lake to adjust to the temperature. When your feet couldn't reach the ground you started swimming to keep yourself above water, feeling a little could but you didn't care. A few more second and you felt great already. Sans smiled and took a few stepps back, only to start running before jumping into the water making a big splash. You giggled. He came out from under the water, clearing his eye sockets. Once he finished he grinned and splashed you with water. You were hit by the splash. You grinned back as you sent a bigger splash at him. Time passed while you two were playing and splashing each other.

You lost the feeling of time while you were enjoying every second with Sans. More time passed, both of you were sitting on a shallow end of the water. Sans was holding you. Minutes passed and you got up and went back on land. You walked up to a rock and moved it revealing some illuminating paint. Sans didn't see what was going on. You took the paint and a brush, walked over to a free wall and started painting, somtimes looking at Sans. He realised what you were doing and remained in his position. A few minutes later there was a painting of Sans inside the water on the wall. You were surprised when two hands hugged you from behind and someone wisperd into your ear: "It's beautiful." You smiled happily, not caring at all about your blush. You turned around handing Sans the brush: "Now you try." He was in backed away a few steps. You gave him a comforting smile and pointed to a wall. He took the brush, walked over there and looked at you desperatly. "Think of something to paint, observe it and start painting it." He turned to the wall. He set the brush on the wall, only to pull back afterwards. This went on for a few minutes untill he finally started painting something. You waited for him to finish. Some time later he took a step back, looked at his work and then at the floor. You walked up to the painting. It wasn't very clear but you realised it was supposed to be you with Sans him holding you in his arms. You smiled and hugged him: "It's beautifull." You remained inside the cave for hours painting, laughing, swimming and talking. "When are you down here?" Sans asked after a long talk. "I come here to think and paint, it's my favourite place. I come here when i feel sad or lonely." Sans smiled: "Well, you'll never fell lonely or sad ever again." You loocked at him in confusen: "What do you mean?" He gave you a seriouse look beefore saying, "I promise that i will never ever let you get hurt, get sad or lonely." with that he pulled you into a hugg. You were happy no one had ever cared about you this much. After hours you looked at a little clock, which you always had with you. Realising it was really late, you two got ready to leave. You walked back the direction you came from. Finally you reached the end of the cave and walked into the forest. You looked up at the sky, it had just turned dark. Sans grabbed your hand with the intension to go home but he soon realised that you were still in the forest and that he didn't know where to go. You chuckeld and led him out of the forest, back onto the way to Snowdin.

(Here's the next chapter. Hope you liked it and........COULD SOMEONE LEAVE A COMMENT!? I wanna know what you think so far. Anyway, BAI!!!)