Warning Swearing Mention of blood if you don't like the story, please leave T-T Only a few characters can wield breathing styles. And Y/n-chan is one of them

Y/N was just an ordinary person from the 21st century, she didn't expect to wake up in an anime where human-eating demons roam free every night. Well, what's left for her is to learn how to use a sword and help the protagonist make his sister human again, who knows if she can get back to her world like this? Little did she know what was coming in this world that wasn't even hers. ❀⊱┄┄┄┄┄┄┄┄┄┄┄⊰❀ ❀ - STATUS : ONGOING ❀ - DEMON SLAYER BELONGS TO KOYOHARU GOTOGE ❀ - COVER ART DOES NOT BELONG TO ME ❀ - ON QUOTEV UNDER THE SAME NAME