I Fell for a human -_Underfell!Sans X Reader...
You are a 19 year old guy/girl and you have just fallen into the world of the underground, you have no family to go back to because of your father who killed them all in cold blood and then went after you, but after finding out you fell down that hole he left you there to rot just like the others.
You met a flower who looked like he was always on the barrier between crying and happiness, but of course you had to have forgotten that you are in underfell now and the rules don't apply to happiness unless you kill others
(BOOK PICTURE BELONGS TO ME AND A FRIEND)
ALSO THIS BOOK IS UNEDITED IN SOMEPARTS THAT I WILL FIX IT LATER
Including I do not own Sans the skeleton from underfell and I don't own you!