Undertale Smut

Sans x Reader

(So my name is Friendly and I was on 'Souls for a little while so I guess I'm decent at writing? This is just a forewarning because it might not be the best in the world but eh)

It's been quite a while since the monsters have made way to the surface. You have gotten quite used to it, not to mention that you were good friends with two of them. Well, you were more than just friends with one of them. You had a crush on Sans the skeleton, and you wanted to tell him how you felt... sooner or later.

And now was the time.

You dressed up in a dress, thinking it was good enough to impress him. You walked up to their house, heart beating out of your chest. You've had crushes earlier in your life, but you always chickened out when it came to admitting it. Your hand wobbled as your finally knocked on the door. Your heart was beating even faster. "Shit." you thought, knowing this wasn't going to be easy. You couldn't turn back now.

You heard footsteps behind the door, and someone opened up. It was Sans.

"H-hello," you said nervously. "I just wanted to tell you something."

"What is it?" Sans replied, raising an "eyebrow."

"Well, uhh..." You responded. You knew him for a while now, but you didn't have the guts to say anything (pun totally intended). You finally opened your mouth to say something. "I... like you. Not as in the friend kind of like, the... crush kind of like."

Sans' grin widened a little bit. "To be honest," he started to reply. "I kinda like you too."

Your eyes widened a bit. "Really?" You thought. This was unexpected. Was it a dream? "I mean, you look pretty... sexy in that dress." A little bit of blue showed up on his cheekbones.

You blushed a little bit too. You never knew that he would say something like that to you. Your eyebrows drooped a little bit and you gave a sly smirk. Sans grabbed you hand is squeezed it a little bit. "Do you want to come inside? Papyrus is gone, so we have the house all to ourselves."

"Was he trying to flirt with me?" This may mean that he may want to do something "fun" with you, and you liked the idea. "So, what do you want to do?" you asked, kind of clueless on how obvious the answer will be. And you were right.

"Well, (Y/N), we'll have a lot of fun together." Sans closed the door and placed is bony hand on your left cheek. Your blush darkened and was now all over your cheeks. Since nobody was home, you assumed Sans thought it was the best time to do this. "Come with me." He walked up the stairs to the room on the right hand side of the hall. You trailed behind him, and he opened the door. You walked in and closed the door behind you.

He grabbed your waist and touched his teeth on your cheek, which may have been a skeleton kiss. Your blush was blood red. Sans licked your neck and nibbled on it a little bit until he found your sweet spot. You let out a soft moan.

He moved your hands up from your waist and took off your dress, exposing your bra and panties. He stopped nibbling on your neck and unhooked your bra. You blocked your breasts with your arms. You were kind of shy.

"Don't be shy honey, this will be fun." he teased, and you sighed and uncovered your breasts. He started to pinch your nipples and you let out a loud moan. Sans took his hand off of one of your breasts and reached down to take off your panties. He teleported you to the bed and you flopped down on it.

He kneeled down and spread your legs apart. You moaned in anticipation. Sans started to lick your clit with his magic tongue. You moaned loudly. You were so wet, and Sans knew this. This time he took off his shorts to reveal an erect member. "But you're a skeleton, Sans, how is this possible?"

"It's all magic, sweetheart." He replied and started to rub his member against your entrance.

You were done with the teasing, and you moaned a little bit. He finally thrust into your entrance, and you let out a groan in pain and pleasure. He started to thrust at a slow pace to get started.

"F-faster Sans, please!"

"Beg for me."

"Sans, please, I need your cum!"

He started to thrust faster, and you let out a loud moan as he finally fulfilled your wish. He grunted and moaned above you. "(Y/N), you're so tight... Are you gonna cum?"

You nodded vigorously and moaned. Your inner walls clenched around Sans' conjured cock. You let out a yelp as he reached his climax too.

He shot his seed inside of you, and he steadily pulled out. A bit of his cum was dripping out of your entrance.

He flopped down onto your chest, eyes closed. He was panting heavily. He rolled over onto the bed. "I love you, Sans..." You whispered.

"I love you too, (Y/N)..." he said and you both fell asleep.