- Ah yes... you Fell down in Swapfell. Not knowing that you would encounter a strange monster named... Sans. - ( ART NOT MINE )

not every story has a happy ending

You've been experimented by your own brother to see what could happen if he tried a monster DNA in a human, No one wants to get experimented by him so you decided you'll be his test subject but it went terribly wrong......

(SLOW UPDATES AND UNDER EDIT) You are a young adult, around the age of 19. You don't really have a gender but can be called he/she or they You were living with an awesome family when your father turned insane and killed your mom, brother, and two sisters while they were sleeping. You on the other hand were wide awake when it happened so you got away but your father followed you. He followed you all the way to the famous Mount Ebott where anybody who went there never came back. You thought you had lost him when he made you fall into the underworld Called Underfell Will you survive the torture of a certain short skeleton? Or will you be killed by other monsters in your journey? Sans does treat you like a slave when he finds you, The Genocide Route is open for taking. Kill or be killed is what this world will make you to be (/Disclaimer\) I do not own Undertale or the AU Underfell or the cover art all of that belongs to it's rightful owners. And I do not own you Please no hate on this book like it says it is under edit but new chapters still come out.

A fan fiction from a fangirl who needs to go to therapy once and a while ~Darky

You Had just Fell to the so called "Underground" To only find yourself falling in love with one of the Fell brothers

MEH just another function ha ha a so hope you guys enjoy! （＾ｖ＾）（＾ｖ＾）（＾ｖ＾）

You're a human that has fallen into Mt. Ebott on the year where all humans dress as monsters...Halloween. So how will the monsters know if you're a human or not?

Best ranks: #8 in fanfiction; #1 in undertale; #3 in sans; It was all a dream.....or so you thought.. Edgy: bish how dare u say that was a dreem, it was true af, fite me on dis! *lowvoice* and what im batta do is even more true. *inserts lenny face*

A story of you falling in love with uf sans. first story. Leave a comment on how you liked it. Art is not mine! I'm doing an UF!Papyrus x Skeleton Reader next.