Demon slayer

Intro you're the girl (you can change gender and apperance if you want) in the picture, you were born with small yellow stars surroundimg your left eye(it's your demon slayer mark you were born with it change it if you want) you live in a small village with your parents you have a nice slow life in your village one day a demon ravages your village and in an attempt to survive you take your father's sword and fight the demon with incredible power you never knew you had as you fight a man with white hair and a red splotch around his eye(Tengen Uzui) rushes into the fight and pulls out his massive blades and slices off the demons head and it turned to ash (story takes place during Tanjiro's traing before Mugan Train arc and Nezuko's trial so the possibilities are endless) (put in the comments if you haven't any suggestions for me or any ways i can make this better)