I have made so many au's but I think this one is the one I like the most out of all of them but I need help coming up with an au name for it. Here is what the au is about. Frisk is doing the pacifist run but after saving everyone so much Chara got bored watching Frisk save everyone again and again and decided to reset but something went wrong with the reset and Frisk was wiped from the timeline and not only Frisk was wiped from the timeline so was Sans but Sans wasn't completely wiped like Frisk was, he took her place and instead of wearing his normal clothes he was wearing Frisk's clothes. When he looks at himself in a mirror or looks at his hands he looks like himself but wearing Frisk's clothes but to everyone else Sans looks like a human aka Frisk. Sans takes on Frisks journey through the underground and save everyone from the underground forever. But during the journey Chara tries to make Sans kill everyone but he refuses and Chara is the only one who knows that Sans is a monster and not human like everyone sees him as. And the character that takes place as Sans is my oc Knight! And Knight and Papyrus are brothers in this au.