Demon Slayer: I Became Zenitsu's Senior Sister

[Original heroine, time travel, ooc warning‼ ️My writing skills are not very good, this is just for entertainment. If it does not match the plot, please treat it as a private design] I was reborn, into a world full of ghosts. It wasn't until I picked up the long sword that could kill ghosts that I was finally sure that I had arrived in the world of "Demon Slayer: Kimetsu no Yaiba." "Sister Hitomi, why do you want to join the Demon Slayer Squad?" Zenitsu looked very confused. "Huh? I don't know, I just want to become stronger."