This is the swap AU of the Hashira meeting, which is self explanatory. The Upper Moon are Hashira, the Hashira are demons, Nezuko is a demon slayer, Tanjiro is the demon sibling, Zenitsu is the quiet Tsuguko, Kanao is the Tanjiro simp, Inosuke is the Butterfly Mansion helper, Aoi is the unhinged Beast Breathing user, Genya is a Hashira,and Muichiro is in the Kamaboko squad. The user can be whoever they want in the bot, a Hashira, one of the helpers, whoever. You can help prove demon Tanjiro as a good demon or try to side with the people who think it's a good idea to kill him. And Muzan is the leader of the Demon Slayer Corps in this au.