Warning: possible swearing, inappropriate humour, perhaps lemons? Idk. Just stop being a goody two shoes and enjoy the book, kid

You and Sans had been friends since you were little, when the monsters had to leave, you were really upset that your only friend, Red as you called him, had to leave. Will he remember you after 7 years of being in the underground? Or will he just forget about you? To find out, read 'An Old Friend' Underfell Sans x Reader.

Well yea this is an shipping and yes alot of Lemon cause well Underfell Sans is rough ehehe i know in werid well my first time doing this so if i do make a mistake well comment and help me make it better This can be for guys and Girls i really dont care i know you all think it wrong but meh really dont care if you talk trash cause your just mean :p You had finally got enough of your world everyone was rude actually wanted you gone and actually today your parents kicked you out and so you ran away even though you were kicked out to some werid mountain you heard that if you go there you never come back you end up going there and next thing you knew you were falling down (All pics and undertale goes straight to the owner's)

[Disclaimer that this book is very old nd poorly written, please keep that in mind!] You were shy. You were small. You were picked on. You were told you weren't tall enough. You were hurt. Physically and mentally. He wanted a pet. He wanted someone who wasn't his brother. He wanted someone to talk to. He wanted a purpose. He wanted you... {If you are reading this story on any platform other than Wattpad, you are very likely to be at risk of a malware attack. If you wish to read this story in it's original, safe form, please go to Wattpad. Thank you.} [EDIT: I am now aware of the plot errors in this story, but this book will never be edited nor re-written, so I kindly ask you to stop commenting about them.] ~Achievements~ ~ #1 in #Alphys ~ ~ #1 in #Fell ~ ~ #1 in #Underfell ~ ~ #3 in #Flowey ~ ~ #1 in #Fellsans ~ ~ #3 in #Underfellsans ~ ~ #1 in #Mettaton ~ ~ #1 in #Papyrus ~

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

hello guys it is me agian....... but this time with a new and more exiting book! I will take any request and lemons are allowed!! Im gonna at least try a lemon if one of you guys request it.... anyways enjoy this book!!!

sans and sans make beautiful sans babies please help im making this against my wi

hello filthy sinners and welcome to my first more than one character x reader I hope you enjoy it

sex sex sexy sex boner boner uterus mznznz &!.!,Ω🤤🤤🤤🤤🤤

Smut one-shot for Undertale characters. Yep, this is happening.