You've got to be kitten me! {Underfell papyrus x Reader}

A long time ago when humans and Monsters were at war your ancestor had the most powerful soul amongst the others. They were the ones to seal the mountain, at a cost; with humans rallied behind them pushing monsters back. A monster had cursed your ancestors family to turn into

Cats.

[Found this in my drafts, decided to rewrite it completely and finish it off.]
Disclaimer: I do not own Undertale nor this AU