What if Kimetzu No Yaiba characters had a sleepover? READ TO FIND OUT!!! If you haven't watched Demon Slayer Kimetzu No Yaiba or at least haven't finished it then we recomend you finish watching it till season 4 to understand. ⚠️OUR AU⚠️ ⚠️ SPOILER ALERT: THERE'S INFORMATION FROM THE ANIME⚠️ ⚠️NON OF THE CHARACTERS EXEPT FOR OUR OC BELONGS TO US⚠️ ⚠️BOOK COVER MADE BY US⚠️