In this file photo taken on April 8, 2019 Japan's Prince Hisahito (C) and his parents Prince Akishino (L) and Princess Kiko (R) pose for photos at Ochanomizu University junior high school before attending the entrance ceremony in Tokyo. AFP
In this Aug. 7, 2016, file photo, provided by the Imperial Household Agency of Japan, Japan's Emperor Akihito reads a message for recording at the Imperial Palace in Tokyo. Akihito expressed concern about fulfilling his duties as he ages in an address to the public in a 10-minute recorded speech broadcast on national television that was remarkable for its rarity and its hinted possibility that he may want to abdicate in a few years. Akihito is ending his three-decade reign Tuesday, April 30, 2019 as he abdicates to his son, Crown Prince Naruhito, becoming the first to do so in 200 years, in a step nobody today has witnessed. AP
Japan's Emperor Akihito and Empress Michiko attend the awarding ceremony of the Midori Academic Prize Friday, April 26, 2019, in Tokyo. AP
In this Oct. 1, 1960, file photo, Crown Prince Akihito is photographed while on a boat trip around Manhattan Island sight-seeing in New York. In the background is the Statue of Liberty. The Japanese royals were in New York as part of their state visit. When he abdicates April 30, 2019, Akihito will become the first emperor in Japan’s modern history to see his era end without ever having a war. AP
Japan's Prince Akihito and his bride, the former Michiko Shoda, acknowledge the cheers of Tokyo throngs as the royal carriage rolls through the city after their wedding, April 10, 1959. When he abdicates April 30, 2019, Akihito will become the first emperor in Japan’s modern history to see his era end without ever having a war. AP
Queen Elizabeth II, relaxing from the coronation ceremonies, is joined by Japan's heir apparent, Japan's Prince Akihito, in the royal box as they watch running of Epsom Derby at Britain's Epsom Downs, June 6, 1953. The Queen saw her horse, Aureole, run second in the classic. When he abdicates April 30, 2019, Akihito will become the first emperor in Japan’s modern history to see his era end without ever having a war. AP
In this Sept. 22, 1960, photo, Japanese Crown Prince Akihito and wife Princess Michiko arrive at the Honolulu Airport on the first leg of a tour of the USA. From left, Hawaii Governor William F. Quinn, Akihito, Princess Michiko and Admiral Harry D. Felt, U.S Pacific Commander. When he abdicates April 30, 2019, Akihito will become the first emperor in Japan’s modern history to see his era end without ever having a war. AP
In this Sept. 25, 1960, photo, Crown Prince Akihito and Princess Michiko of Japan take the Mad Hatter's teacup' ride with Walt'Disney and his wife Lillian Disney at Disneyland in Los Angeles. The Japanese royals were in Los Angeles as part of their state visit. AP
In this Dec. 16, 1964, photo, Crown Prince Akihito and Princess Michiko of Japanese visit the Marble Temple in Bangkok. When he abdicates April 30, 2019, Akihito will become the first emperor in Japan’s modern history to see his era end without ever having a war. AP
This file photo taken on March 23, 1934 shows Japan's Emperor Akihito when he was three-months-old. Japan's outgoing Emperor Akihito and Empress Michiko dramatically modernised the tradition-bound monarchy, bringing themselves closer to the public and boosting popular support for the household. AFP
In this file photo taken, probably in the late 30s early 40s, Emperor Hirohito (C) poses with 4 of his 5 children, Prince Akihito (2nd R) and his sisters Princess Shigeko of Teru, Princess Atsuko of Yori and Princess Kazuko of Taka. Japan's outgoing Emperor Akihito and Empress Michiko dramatically modernised the tradition-bound monarchy, bringing themselves closer to the public and boosting popular support for the household. AFP
In this file photo taken in the 50s, Japan's Emperor Hirohito reads a newspaper next to Empress Kojun and Crown Prince Akihito (R) at the imperial Palace in Tokyo. Japan's outgoing Emperor Akihito and Empress Michiko dramatically modernised the tradition-bound monarchy, bringing themselves closer to the public and boosting popular support for the household. AFP
This file photo taken in the 50s shows Prince Akihito posing on horseback at an unknown location. Japan's outgoing Emperor Akihito and Empress Michiko dramatically modernised the tradition-bound monarchy, bringing themselves closer to the public and boosting popular support for the household. AFP
In this file photo taken in the 50s, Prince Akihito poses in an unknown location. Japan's outgoing Emperor Akihito and Empress Michiko dramatically modernised the tradition-bound monarchy, bringing themselves closer to the public and boosting popular support for the household. AFP
In this file photo taken on February 10, 1971 Japan's Prince Akihito and Princess Michiko skate on the Makomanai speedway in Sapporo. Japan's outgoing Emperor Akihito and Empress Michiko dramatically modernised the tradition-bound monarchy, bringing themselves closer to the public and boosting popular support for the household. AFP
A file photo dated 27 November 2017 shows Japan's Emperor Akihito (L) and Empress Michiko wave to Luxembourg's Grand Duke Henri after their meeting and welcoming ceremony for Grand Duke at the Imperial Palace in Tokyo, Japan. Emperor Akihito will abdicate on 30 April 2019 and Crown Prince Naruhito, first son of the Emperor and Empress will succeed Akihito and ascend the Chrysanthemum throne on 01 May 2019. It will be the first abdication by Japanese emperor in about two centuries. EPA
A file photo dated 23 December 2018 shows Japan's Emperor Akihito (R), flanked by Crown Prince Naruhito (L), waves to well-wishers after delivering his speech marking his 85th birthday, last his birthday on the throne, at the Imperial Palace in Tokyo, Japan. Emperor Akihito will abdicate on 30 April 2019 and his son Naruhito will succeed on 01 May 2019. It will be the first abdication by Japanese emperor in about two centuries. EPA
In this file photo taken on April 8, 2019 Japan's Prince Hisahito (C) and his parents Prince Akishino (L) and Princess Kiko (R) pose for photos at Ochanomizu University junior high school before attending the entrance ceremony in Tokyo. AFP
In this Aug. 7, 2016, file photo, provided by the Imperial Household Agency of Japan, Japan's Emperor Akihito reads a message for recording at the Imperial Palace in Tokyo. Akihito expressed concern about fulfilling his duties as he ages in an address to the public in a 10-minute recorded speech broadcast on national television that was remarkable for its rarity and its hinted possibility that he may want to abdicate in a few years. Akihito is ending his three-decade reign Tuesday, April 30, 2019 as he abdicates to his son, Crown Prince Naruhito, becoming the first to do so in 200 years, in a step nobody today has witnessed. AP
Japan's Emperor Akihito and Empress Michiko attend the awarding ceremony of the Midori Academic Prize Friday, April 26, 2019, in Tokyo. AP
In this Oct. 1, 1960, file photo, Crown Prince Akihito is photographed while on a boat trip around Manhattan Island sight-seeing in New York. In the background is the Statue of Liberty. The Japanese royals were in New York as part of their state visit. When he abdicates April 30, 2019, Akihito will become the first emperor in Japan’s modern history to see his era end without ever having a war. AP
Japan's Prince Akihito and his bride, the former Michiko Shoda, acknowledge the cheers of Tokyo throngs as the royal carriage rolls through the city after their wedding, April 10, 1959. When he abdicates April 30, 2019, Akihito will become the first emperor in Japan’s modern history to see his era end without ever having a war. AP
Queen Elizabeth II, relaxing from the coronation ceremonies, is joined by Japan's heir apparent, Japan's Prince Akihito, in the royal box as they watch running of Epsom Derby at Britain's Epsom Downs, June 6, 1953. The Queen saw her horse, Aureole, run second in the classic. When he abdicates April 30, 2019, Akihito will become the first emperor in Japan’s modern history to see his era end without ever having a war. AP
In this Sept. 22, 1960, photo, Japanese Crown Prince Akihito and wife Princess Michiko arrive at the Honolulu Airport on the first leg of a tour of the USA. From left, Hawaii Governor William F. Quinn, Akihito, Princess Michiko and Admiral Harry D. Felt, U.S Pacific Commander. When he abdicates April 30, 2019, Akihito will become the first emperor in Japan’s modern history to see his era end without ever having a war. AP
In this Sept. 25, 1960, photo, Crown Prince Akihito and Princess Michiko of Japan take the Mad Hatter's teacup' ride with Walt'Disney and his wife Lillian Disney at Disneyland in Los Angeles. The Japanese royals were in Los Angeles as part of their state visit. AP
In this Dec. 16, 1964, photo, Crown Prince Akihito and Princess Michiko of Japanese visit the Marble Temple in Bangkok. When he abdicates April 30, 2019, Akihito will become the first emperor in Japan’s modern history to see his era end without ever having a war. AP
This file photo taken on March 23, 1934 shows Japan's Emperor Akihito when he was three-months-old. Japan's outgoing Emperor Akihito and Empress Michiko dramatically modernised the tradition-bound monarchy, bringing themselves closer to the public and boosting popular support for the household. AFP
In this file photo taken, probably in the late 30s early 40s, Emperor Hirohito (C) poses with 4 of his 5 children, Prince Akihito (2nd R) and his sisters Princess Shigeko of Teru, Princess Atsuko of Yori and Princess Kazuko of Taka. Japan's outgoing Emperor Akihito and Empress Michiko dramatically modernised the tradition-bound monarchy, bringing themselves closer to the public and boosting popular support for the household. AFP
In this file photo taken in the 50s, Japan's Emperor Hirohito reads a newspaper next to Empress Kojun and Crown Prince Akihito (R) at the imperial Palace in Tokyo. Japan's outgoing Emperor Akihito and Empress Michiko dramatically modernised the tradition-bound monarchy, bringing themselves closer to the public and boosting popular support for the household. AFP
This file photo taken in the 50s shows Prince Akihito posing on horseback at an unknown location. Japan's outgoing Emperor Akihito and Empress Michiko dramatically modernised the tradition-bound monarchy, bringing themselves closer to the public and boosting popular support for the household. AFP
In this file photo taken in the 50s, Prince Akihito poses in an unknown location. Japan's outgoing Emperor Akihito and Empress Michiko dramatically modernised the tradition-bound monarchy, bringing themselves closer to the public and boosting popular support for the household. AFP
In this file photo taken on February 10, 1971 Japan's Prince Akihito and Princess Michiko skate on the Makomanai speedway in Sapporo. Japan's outgoing Emperor Akihito and Empress Michiko dramatically modernised the tradition-bound monarchy, bringing themselves closer to the public and boosting popular support for the household. AFP
A file photo dated 27 November 2017 shows Japan's Emperor Akihito (L) and Empress Michiko wave to Luxembourg's Grand Duke Henri after their meeting and welcoming ceremony for Grand Duke at the Imperial Palace in Tokyo, Japan. Emperor Akihito will abdicate on 30 April 2019 and Crown Prince Naruhito, first son of the Emperor and Empress will succeed Akihito and ascend the Chrysanthemum throne on 01 May 2019. It will be the first abdication by Japanese emperor in about two centuries. EPA
A file photo dated 23 December 2018 shows Japan's Emperor Akihito (R), flanked by Crown Prince Naruhito (L), waves to well-wishers after delivering his speech marking his 85th birthday, last his birthday on the throne, at the Imperial Palace in Tokyo, Japan. Emperor Akihito will abdicate on 30 April 2019 and his son Naruhito will succeed on 01 May 2019. It will be the first abdication by Japanese emperor in about two centuries. EPA
In this file photo taken on April 8, 2019 Japan's Prince Hisahito (C) and his parents Prince Akishino (L) and Princess Kiko (R) pose for photos at Ochanomizu University junior high school before attending the entrance ceremony in Tokyo. AFP