Warning: [Au! Sans x Sans! Reader] Unknown to any other Sans, there lives a secret dimensional pocket timeline called Under (). (Y/N) is the Sans of that world while their younger brother (B/N) is the Papyrus. One day, a glitchy dimensional pocket appears and poor (B/N) falls through. (Y/N) must find a way to save her brother. Along the way they meet some...unexpected allies.

Ten years ago, you awoke in the Anti-Void after a near-death experience and meet two strange skeletons before rocketing back into the waking world. Now, after an awful car accident, you find yourself back there. Guided by your new companions Dream and Ink, whom you had met before, you find yourself amidst an adventure and the strange occurrences that had began after you showed up

You've heard of "Kiss kiss fall in love!" well this is "Break-in fall in love!" You, as a thief for the Vargas Mob, break into Sans and Papyrus' apartment to steal information from them. Unfortunately, your caught. Which, in a series of events, end up with you and Sans falling in love.

Reader goes on a blind date and ends up having a better time then expected. / female Reader / Reader x Sans

Tra la la. Beware of the mad fanfic writer. Tra la la. (Sans x Reader) (Reader is !Riverperson) (Short-fiction)

You've had eyes on you all night - but there is one pair in particular that burn brighter than the others. (Oneshot, a little smut)