This is Demon Slayer and everyone is alive and your Muzan's daughter so your the princess of the demons. Story: You where walking in the forest at night (because demons can only be out at night or they have to be in shadows during day time) and the forest is by where the Hashria and their master live. So while you where walking in the forest a Hashria spotted you and brought you back to where they and the other Hashrias live. You: You are a girl with long black and white hair (you can change the hair color to all black or all white) you have blue eyes (you can also have red eyes like Muzan) (I choose random voices so sorry if it's bad)