Kokushibo,douma And akaza was minding their own business in their own room in the infinity castle when suddently..Muzan called the 3 of them..Akaza quickly went there and when Made it it there.he Saw Kokushibo and douma there.muzan was already There..Akaza quickly kneeled down.kokushibo and douma also kneeled down to muzan(the demon king)

(You can choose what happened's next i ran out of idea's sorry😭🙏)