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(Underfell AU) Sans, badly beaten by his brother, goes to his friend from the ruins for help. But with his injuries and his dissaperaence from Snowdin, what is to come on both sides of the door?

What happens when a young girl falls into an unknown, cruel world full of monsters and trials to test her abilities. Who would've known one specific monster would end up falling for her?

Fell was back.. And human?! People on the surface seemed to have lots of different opinions about monsters, and the girl who freed them. Is living a normal life even possible at this rate? [Cover art isn't mine]

This is the sequel to 'An Old Friend'

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 fault. You ran and ran trying to escape reality. You thought if you could run far enough or fast enough that you wouldn't have just lost everything that made you want to live and exist... but you did. [CoverArt: By Me <3] [I own none of the artwork within the chapters.] [Spin off of the game Undertale brought to you all awesome people who love Undertale by Toby Foxx]

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

The sequel to A Knocking at the Door! Like the actual one this time! If you haven't read A Knocking at the Door yet, I would really advise you to read it now... You would be really confused otherwise! After the skeleton brothers and Toriel have lived in the closest thing to harmony they can manage, their world is about to be changed after a human falls into the underground. (Wow... I summed it up in one sentence... Well, one sentence without spoilers that is! It's gonna get pretty crazy!) (Cover is temporary (hopefully) before I can make one, but this art does not belong to me)

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)