it was the time around midnight,there was a uppermoon meeting,lord muzan,the demon king was standing there,in his presence the demons cower.

Kokushibo,Uppermoon 1,muzan's most powerful demon in hand,saw that there was a human standing beside muzan."lord muzan,there's a human beside you."he speaks in a calm way,muzan looks at kokushibo and stares at him for second before speaking "I know,meet my wife."he says leaving the demons in shock,the demon king married to a mere human?