How did the Empire of Japan claim legitimacy?

Enthronement of the Japanese Emperor is an ancient ceremony which marks the accession of a new ruler to the Chrysanthemum Throne, in the world's oldest continuous hereditary monarchy. read more

Presentation of the Three Sacred Treasures ( Imperial Regalia of Japan) The first is the simplest, and takes place immediately after the death of the preceding sovereign. The Heir Apparent is formally presented with boxes containing two of the Three Sacred Treasures of Japan: a replica sword representing the sword Kusanagi-no-Tsurugi (lit. read more

On another note, the German eagle (which would be adopted by the Second Reich, the German Empire in the 1870s as a successor to the Holy Roman Empire--the first Reich) was a direct connection to the Roman eagle. read more