constitutional monarchy

A country with an imperial or royal family is not a presidential system.This is because it is a constitutional monarchy.The president will be the head of state.Therefore, countries with imperial and royal families adopt a parliamentary cabinet system if they are democratic.Koreans often say that Japan is a democratic backward country because it does not directly elect its leader.I was surprised to hear that even a university professor who is Korean said such a thing.Britain, the birthplace of modern democracy, is also likely to become a backward country.