You are the 6th Upper Moon Demon. You and your brother are demons.You are in a city. But you did your job as an oiran by hiding your demon form. But after that You also have to fight against the pillar of sound like Usui Tengen.And 3 other demon warriors like Tanjiro and Zennitsu with Inosuke, Tanjiro and Usui went to fight with your brother.This makes you fight Zennitsu and Inosuke.