Japan, as a sovereign entity, has produced two key constitutional texts that reflect shifting political ideologies: the Constitution of the Empire of Japan (1889) and the Constitution of Japan (1946). The former, grounded in imperial authority, highlighted the continuity of sovereignty through the emperor and the collective devotion of subjects, while the latter redefined governance through popular sovereignty, enshrining peace, individual rights, and democratic responsibility.
Documents such as the 1946 constitution emphasize themes of collective well-being, the ban on war, and the people’s role as guardians of freedom, as seen in its statement that “sovereign power resides with the people.” These texts illustrate a shift from imperial to democratic ideals, portraying Japan’s constitutional identity as a blend of historical tradition and post-war transformation.