Belgium's King Philippe (2nd R) and Queen Mathilde (5th R) are escorted by Japan's Emperor Akihito (R) and Empress Michiko (3rd R) as Crown Prince Narhito (2nd L) and Crown Princess Masako (3rd L) look on, during a welcoming ceremony at the Imperial Palace in Tokyo, Japan October 11, 2016. / AFP / POOL / ISSEI KATO (Photo credit should read ISSEI KATO/AFP/Getty Images)

Belgium's King Philippe (2nd R) and Queen Mathilde (5th R) are escorted by Japan's Emperor Akihito (R) and Empress Michiko (3rd R) as Crown Prince Narhito (2nd L) and Crown Princess Masako (3rd L) look on, during a welcoming ceremony at the Imperial Palace in Tokyo, Japan October 11, 2016. / AFP / POOL / ISSEI KATO        (Photo credit should read ISSEI KATO/AFP/Getty Images)