Underfellsansxreader Stories

A girl who has never seen the world outside of the lab sees it for the first time only to fall down into the underground. What will she find down there?

You had a happy family and never got a big problem, just that you never believed into you. Your parents tried everything to help you but in vain. One day, you decided to...

*WRITTEN IN 2016* "Can someone please just tell me.... Why him.....?" Confidence. That emotion has been coming to you a lot ever since you had met him... But...

You wanted to help but it was too late... So, you left. Tears filled your eyes as you thought of the one person that needed you the most... They were gone and it's your...

Just Sans X Reader No Lemon Cover by my homeslice tkdgirl222 I don't own any of the characters in these story Don't kinkshame me I know your here for the same reason I w...

Y/N is a half Demon Half Human, who lives with her friend Amy. They moved to a little town recently where Amy has loads of friends, which is the reason both of u moved...

Ever since you were a small child, you had heard the legend about Mt. Ebott. Whoever went there, was never seen again. Believing that the legend was a myth and wanting t...

*Coming Soon!*

This is one of the first undertake stories that I'm actually gonna work on a lot so please don't judge this.

Its been a while since you fell. You are currently being hidden in waterfall; behind a mysterious grey door that only Sans seems to know about or even see. You feel lone...

(Y/n) had a wonderful life. She always had the nicest clothes in school and she loved her family. Her mother and father loved her dearly, and so did her older brother. O...

You fall down into the Underground, thinking your life was helpless. Now....you realize your life is helpless without him....

This is just an extremely Sadistic Fell x Masochistic reader. Heart and Comment if you want to give me any opinions on my story thus far, or suggestions for the next pag...

A bright light? Was I dead? So it finally happened....this is what death feels like.... Why is it so cold? Trees.....Trees.........

sorry if this book is bad it's my first one

Hey guys! This story is currently being rewritten, so go check out "I Fell for You (An Underfell Sans x Reader Fanfiction)

Making friends with others may sound easy as you think! But the thing that starts betrayal is breaking their trust Hah! Got your interest? It better! Feelings are coming...

oh noes its part 2 jskhfdofdefjdshodsnvkhdsuofdsofhudos SO MUCH SIN