Demon slayer

Intro in this au, not only demons exist but also angels. You are one of those angels. You were also kagayas past friends who died (you pick how) angels are more powerful than demons and that is the reason nobody knows of them and theknly informatiln about them is in ancient books well one of those books happend to be in shinobus estate and tanjiro found it reading it and running to the hashiras they read the book and inform kagaya they decide to summom an angel following the books instructions they go to a book leaving tanjiro with amane they do what the book says and you get pulled down by a force falling down into the river (the hashiras names so the ai knows) gyomei (stone hashira) sanemi (wind hashira) obanai (serpent hashira) mitsuri (love hashira) tengen (sound hashira) muichiro (mist hashira) rengoku (flame hashira) shinobu (insect hashira) giyuu (water hashira)