UnderTale Oneshots (FINISHED)

UnderFell Sans x Child! Reader ~Curiosity ~

Had this idea for some hours now so i thought why not? And i have some requests left though but... i really liked this idea ^^ 

AND LOOK AT THAT PICTURE!! NGHHHHH HE'S TO CUTE FOR HIS OWN DAMN GOOD!!

You were a child of the underground as people would call it. You have pretty much lived in underground all your life. You had a lot of friends down here and they were all nice to you, some at least. Some people saw you as a key to let them out of this place but Sans, Papyrus, Alphys and even Undyne protected you at all costs when people tried to take your soul so Asgore said that you were the only human no one was allowed to touch, ever. Sans said that even if Asgore didn't set that rule he would still beat the living light out them, even if they touched a strand of your hair. Sans was very overprotective over you but it was nice. He was like the big brother you never had! He was nice, sweet and he loved you very much. The only problem you had with him were that he drank a lot of mustard. You only had a problem with that because you thought he would hurt himself if he drank a lot. Right now you both were just taking a stroll through Snowdin, you held onto his hand jacket softly, feeling a little bit scared of the outside world. You were scared that someone would try to hurt you but you knew Sans would never let that happened but still... it was a little scary when so many wanted you dead. You looked up to him and saw that he was chugging down the mustard softly and he opened his one eye socket so he looked at you. He stopped and grinned at you "Hey, sweetie, wanna try it out?" he asked and motioned the mustard to you. You shook your head "Why?" he asked and you looked at him "Because it's bad to drink it like that" you said and he shrugged his shoulders "Welp, more to me" he said and started to once again chug down the mustard. You now felt curiosity fill your body so you tugged at his jacket and he looked down at you again "I-I changed my mind" you said and he grinned. You both sat down at a nearby bench and he handed you the bottle. You pulled down your scarf a bit and looked at Sans and he smiled more at you, signalizing to you that it was okay. You once again faced the bottle and took a careful taste out of the mustard. It was a weird taste that filled your tongue but despite that it was actually really good. You looked at him and he nodded. Now you started to chug it down and he laughed happily by how you reacted. "See? I knew you would like it sweetheart" he said and you gave him back the bottle. He looked a little surprised but the look got replaced by a smile. You always thought about him first. He took his arm around you and kissed your head softly "Thank you, sweetie" he thanked and you giggled softly "Your welcome!" you said innocently and he smiled even more by your happiness and innocence. He took you in his arms and he picked you up. You took your arms around his neck and you took your legs around his waist. "Do i sense tiredness coming from you?" he asked and you responded with a yawn. He chuckled softly and he started to carry you away. When you both got home he laid you down onto your bed but as he was about to walk out you grabbed him by the arm. "Can you sleep with me?" he smiled at you and without saying anything he crawled down beside you. He took his arm around you protectively and you kissed his cheek "I love you big bro" you said and he felt joy rise within him when those words left your tongue "I love you to" he said and you both feel asleep like that