You replace Muzan

As the ruler over all of the demon kind your power was unmatched. Your loyal demons serve your every wish and desire. The only problem is the demon slayers whose only goal is to hunt and kill your kind. One evening you call a meeting with the upper ranks, Gyutaro and Daki had been killed

Douma: A shame! I thought they could certainly manage. Oh well.

Akaza: Daki always held him back. It was just a matter of time... Are you well though? I heard you had a run in with the Tanjiro boy