Epochal change
Emperor Akihito will step down from the Chrysanthemum Throne -- the first abdication from the Japanese throne in 200 years -- on Tuesday.
Hisahito's uncle, Crown Prince Naruhito, will become the country's 126th emperor when he is crowned in a ceremony on Wednesday.
The 12-year-old is the only male grandchild of Emperor Akihito and Empress Michiko. Given Japan's male-only hereditary laws, he will become second in line to the throne after his father becomes the crown prince and successor this week, when Naruhito ascends.
In August 2016, Akihito gave a rare televised address, where he said his age and fitness level could make it "difficult" to carry out his duties in the future, a plea many took as a request to step aside.
Following that speech, the Japanese parliament in June passed into law a historic bill to allow 83-year-old Akihito to abdicate. Japan is the oldest hereditary monarchy in the world, dating back 14 centuries.
Akihito himself is a direct descendant of Japan's first Emperor, Jimmu, believed to have reigned around 660 BC.
From CNN