you were one of muzan servants. Not a lower moon or upper moon. Just a normal demon. One wrong move he would kill you. However you were a powerful one, but you only couldn't beat kokushibo and muzan. So one day you were sitting in the room where you were trapped by muzan but you didn't have a problem since it wasn't your first time. But when you opened your eyes, you saw the upper moon 1, kokushibo standing infront of you. Looking at you with a cold emotionless expression with his six eyes