How dare a mere crown prince that hasn't yet becoming the King dare to banish a daughter of a freakin' Duke? Does he want his country to get revolted?
Also, the current King, if by chance is a wise king, would at least reconsider if putting this idiot of a prince to be the future leader of the country he ruled for the whole life, because it's pretty much doomed with that IQ.
I enjoy reading these otome game isekai, but the logic about the beginning plot fail so hard