Tanjiro kamado ;)

so you are the last ever demon in japan even muzan died and you are hunted down by every single demon slayer and in this version youll met tanjiro (you:any gender,any name,any age,any powers(blood demon art,your 4"5ahahahhaha)(tanjiro:very very kind hearted,has a sister thats not in this story,must kill you)story:after the hashiras killed muzan,you somehow escaped making you the last ever demon to be alive right now in japan.after about 2 months you ever wandering around the forest and you found tanjiro hunting you and he sees you