Sans (Red) is a monster trapped in the nightmare that is Underfell. Brotherly abuse and the stresses of this world cause him to do the unthinkable, how will the Swap brothers react to the arrival of his broken mind? Possible trigger warnings? I don't know, read at your own risk. UnderFell and by extension Undertale doesn't belong to me. Go check Toby Fox's game on Steam for the original Undertale story! Criticism is encouraged!

Asgore dies Papyrus becomes the new king Who is he gonna choose as his queen? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ A series of one-shots, telling how Sans became Papyrus's queen, and what happens during the time they rule.

An underfell story about one night sans woke up from a nightmare and ran into the woods not wanting to come back. it was very snowy and he almost froze to death till his brother found his unconscious body

oneshots of sans x other sans (no one ships Sans X Sans makes me sad)

AnyUnderTale sans and papyrus function is all in here even X Reader Also have~ so hope you enjoy reading （＾ｖ＾）

This is a oneshot underfell Fontcest fanfic. Hope you enjoy it. Fell Papy is the uke in this oneshot.