I was initially think the prince was the one who organized the killing, but then the duke said "I can't wait anymore". He is clearly obsessed and been using Louis' look alikes to replace him because Louis hasn't replied to his confession.
And the dream is probably related to child birth (blooming flower) and Louis' decision to abort the fetus, that is why the dragon (aka prince) was crying, because the prince is the father.











I don't understand a thing what they were saying