総理大臣 (sōri daijin) is the Prime Minister of Japan, serving as the head of the government. This position is responsible for overseeing the executive branch, implementing laws, and making key policy decisions. The Prime Minister is also the leader of the ruling political party and represents Japan in international affairs. The Prime Minister is appointed by the 天皇 (tennō), or Emperor, after being elected by the 国会 (kokkai), which is Japan's National Diet. The role requires strong leadership skills and the ability to work with various political parties and stakeholders to address the country's challenges.