The Japanese imperial system is a hereditary monarchy that has existed for over a millennium. The emperor, currently Emperor Naruhito, serves as the ceremonial head of state, symbolizing the unity of the nation. The role is largely symbolic, with no governing powers, as Japan is a constitutional monarchy. The imperial family is part of the Yamato dynasty, which claims descent from the sun goddess Amaterasu. The system has undergone significant changes, especially after World War II, when the emperor's role was redefined to focus on cultural and ceremonial duties, aligning with Japan's democratic framework.