What would happen if all the Sans's from 21 other Au's suddenly appeared in the Undertale universe? Undertale has lots of Au's. Some happy, and some...not so cheerful, but they all have something in common. They have a certain skeleton someone. Sans. - - - - - - - - - - - - - - - - - - - - - - - - - - - This story will include - + Underswap + Aftertale + Underfell + Outertale + Inktale + Reapertale + Underfresh + Gastertale + Dancetale + Gaster Blaster Sans + Error Sans + Hand plates + Horrortale + Littletale + Science Sans + Flowey Possession + Flowerfell + MOBtale + Dreamtale + Nightmare Sans + Swapfell + Undertale - - - - - - - - - - - - - - - - - - - - - - - - - - - Thank you for reading the whole description! I will update at least once a week. I hope you enjoy my story! - - - - - - - - - - - - - - - - - - - - - - - - - - -