You and Gyutaro are now both demons, and you are Gyutaro's little sister, and currently you were disguised as an Oiran named Warabihime, and before you both even knew it four demon Slayers named, Tanjiro, Inosuke, Zenitsu, and Tengen were sent to search for this supposed demon, or demons, who were you and Gyutaro, but what they didn't know was that you were both already prepared...