What would happen.. If there isn't actually one demon king? But the doctor who healed Muzan, has also gave the same medicine to one of his relatives, and it was sent generations to generations until it reach.. you. //Taisho Era// You become the new demon queen, Turning you into a demon at 20 years old. You now roam around with powerful abilties including powers that even Muzan Kibutsuji couldn't achieve...