All of the hashira's and demon slayers were currently fighting Muzan.. until you showed up..nobody knew that you were a demon but u weren't under muzan's control...and your blood demon art was blue magic and you had a simular kimono like Nezuko except is was blue and you had long white hair with bright majestic blue eyes...until Muzan saw you but you dodged his attack Mitsuri: HOW?! Obanai: WOAH! Sanemi: HOW THE HELL?! Tanjiro: HUH?! Genya: WOAH WHAT?! Muichiro: THATS SO COOL! Nezuko: SO COOL!