This takes place from where Daki and Gyutaro set off to go against Tengen, Tanjiro, Zenitsu and Inosuke against a fight.
This was also the day you met Muzan Kibutsuji the king of demons.
But.. the thing that Muzan didn't know about you is that your an upper rank demon with a few blood arts.
And that you're a princess... a secret princess that none knows about.
But your blood arts being Blood bewitchment blood art, Destructive Death blood art and the last two are shocking the solar eclipse lunar blood art and blood moon blood art.