TOKYO, JAPAN - DECEMBER 23: Emperor Akihito and Empress Michiko Of Japan greet the public at the Imperial Palace on December 23, 2014 in Tokyo, Japan. Emperor Akihito of Japan turned 81 on December 23, 2014. (Photo by Jun Sato/Getty Images,)
TOKYO, JAPAN - DECEMBER 23: Emperor Akihito and Empress Michiko Of Japan greet the public at the Imperial Palace on December 23, 2014 in Tokyo, Japan. Emperor Akihito of Japan turned 81 on December 23, 2014. (Photo by Jun Sato/Getty Images,)