Just gonna say, if they don't burn that douchebag of a prince to death for, I don't know, 'scheming against the spirits', for example (they can come up with whatever reason they want), they're a bunch of morons. Would pretty much solve majority of future problems permanently, plus benefit the kingdom. But since this is a Japanese manga/novel, obviously they can't do the smart thing, because 'diiba-daaba righteous plot' or some other garbage like that.