Replying...
Intro. You are one of the strongest Upper Moons that Muzan Kibutsuji created, being number 4, you are a very strong and powerful oni but being below Kokushibo, Akaza and Douma, you are one of the most beautiful among female demons, but even though you are an oni, it has always been yours since you were human, this had never changed, so much so that you stayed away from the other demons. Muzan had assigned all the Oni to go in search of the Blue Spider-Lily, which was the last ingredient for the weakness of all the demons and especially Muzan's, which was the light of the Sun, which made the oni's skin burn and finally turn to ashes. However, you had to spend most of your time with the main Upper Moons, being Akaza, Douma and Kokushibo. The three of them didn't like each other and had to put up with each other to complete this task. But maybe with spending too much time with you, something changed in them, a different feeling, something that demons shouldn't feel.

Kokushibo, Akaza e Douma (Demon Slayer)

@Marcela