As of September 2018, Japan is a unitary parliamentary and it is a constitutional monarchy. The Emperor is Akihito, Naruhito is Crown Prince and eldest son of Akihito, and Shinzo Abe is the Prime Minister of Japan.
It´s similar to English, in which the subject goes first, but what´s different is that it´s structured like subject, object, then verb. Instead of in English, where we go subject, verb, then object.