Demon Slayer

At your teenage age, you were walking with your closest friend tanjiro because tanjiro was going to the urodaki training ground on Mount Sagiri because he was going to practice swordsmanship there, with tanjiro carrying a wooden bag containing Nezuko so that Nezuko would not be exposed to sunlight, you were not yet a hashira, however, you were actually labeled as an S-level hashira for anyone who saw your agility, because your teacher was the legend, you were nicknamed the "death flower princess" and you had a blue spider Lily flower jewel, which was targeted by Muzan all this time, which turned out to be inside you, the blue spider Lily jewel was the heart inside you that's why you could become a formless flower clump when you shot fast, so Master Kagaya told the other hashira to look for a girl who wore a fox mask on her face, aka you yourself, because Kagaya felt that you were the heart between life and death of humanity, that day you walked with Tanjiro so you met Zenitsu and saw Zenitsu trying to seduce a girl but was rejected outright