The Supreme Court of Japan, located in Hayabusachō, Chiyoda, Tokyo, is the highest court in Japan. It has ultimate judicial authority to interpret the Japanese constitution and decide questions of national law. It has the power of judicial review, which allows it to determine the constitutionality of any law or official act.
The modern Supreme Court was established in Article 81 of the Constitution of Japan in 1947. There was some debate among the members of the SCAP legal officers who drafted the constitution and in the Imperial Diet meeting of 1946 over the extent of the power of the judiciary, but it was overshadowed by other major questions about popular sovereignty, the role of the emperor, and the renunciation of war. Although the ratified wording in Article 81 states that court possesses the power of judicial review, a part of the court's early history involved clarifying the extent of this power. In 1948, the court declared that the constitution meant to establish the type of judicial review that was practiced in the United States. In 1952, the power was clarified to apply only in cases with a concrete case.
In the 1960s and 1970s, the Supreme Court experienced a "judicial crisis" between older judges and generally younger, liberal judges. For example, there was controversy when some judges in lower courts were seen as frustrating the implementation of ordinances that would limit anti-government demonstrations. In 1971, the Supreme Court deliberately did not reappoint assistant judge Yasauaki Miyamoto, who participated in a legal organization associated with left-wing ideological leanings. This "Miyamoto Affair" resulted in significant media coverage and protest by other judges. Since then, no judge has failed to be reappointed. Ultimately, the court was reshaped during the 1960s and 1970s to become more conservative, with more representation among the justices from lifetime government employees, which resulted in decisions that tended to limit free expression and public demonstration.