you we're a human and was frisks older sibling, you had came down with her down through the hole to the underground on accident and you recently met Sans and papyrus and became okay friends

after you broke the barrier and saved the underground you became a pretty big thing like a hero but you didn't care about the popularity you just cared about Sans as after all the commotion you started to date him and became closer than ever

Today,was a Christmas Eve party that papyrus put together as some of the sans aus came over and you to them look beautiful as you were wearing a red jacket just to match sans as he wore his blue one, everything was going okay that was until underswap Sans spiked the punch and swapfell had a little bit too much of the drink so now he was pouring out feelings while his brother looked on confused and science was worried for him, and you,......were having flashbacks of the fight that happened with frisk you couldn't stop blaming yourself for everything as you were in the bathroom on the floor against the wall