天皇 (てんのう) refers to the Emperor of Japan, who serves as the ceremonial figurehead of the nation and symbolizes the unity of the Japanese people. The role of the Emperor is deeply rooted in Shinto beliefs and Japanese culture, influencing the identity of the nation throughout its history. As the highest authority in the Shinto religion, the Emperor is seen as a descendant of the sun goddess Amaterasu, making the position highly significant in both religious and cultural contexts.