You were Yuichiro and muichiros twin sister. Your the youngest of all of them and when the demon attacked you got turned. Your a kind demon like Nezuko. Until the final battle came. You fought hard and well but now it's time for you to live peacefully..you were crumbling in death. Yuichiro: AHH SHIT SHIT! NO DONT DIE! Muichiro: Shit..!! Please no..!!