Yeah huyam the old kaguya lolI do not know. What I know is that Sultans wife is a skank. She needs to die.
Oh good you spoiled me...yep he dies in season 4 at the hands of his father.
after the other son of the sultan (muhammad the one who came from the second wife) died the sultan thought that his first son (mustafa who came from the first wife) killed him because he wanted the throne.
but he was mistaken and after knowing that it was the doing of his first and second wifes, he lived all his life depressed until he died.