Crown Prince Akishino Family Visits Bhutan - Day 1, on August 16, 2019 in Tokyo, Japan.

Crown Prince Fumihito or Crown Prince Akishino is seen on departure for Bhutan at Haneda Airport on August 16, 2019, in Tokyo, Japan.

Crown Prince Fumihito is seen on departure for Bhutan at Haneda Airport on August 16, 2019, in Tokyo, Japan.

Crown Prince Fumihito is seen on departure for Bhutan at Haneda Airport on August 16, 2019, in Tokyo, Japan.

Crown Princess Kiko of Akishino and Prince Hisahito are seen on departure for Bhutan at Haneda Airport on August 16, 2019, in Tokyo, Japan.

Crown Princess Kiko of Akishino and Prince Hisahito are seen on departure for Bhutan at Haneda Airport on August 16, 2019, in Tokyo, Japan.

Crown Princess Kiko of Akishino and Prince Hisahito are seen on departure for Bhutan at Haneda Airport on August 16, 2019, in Tokyo, Japan.

Crown Princess Kiko of Akishino and Prince Hisahito are seen on departure for Bhutan at Haneda Airport on August 16, 2019, in Tokyo, Japan.

Crown Prince Fumihito or Crown Prince Akishino is seen on arrival at Paro International Airport on August 17, 2019, in Paro, Bhutan.

Prince Hisahito is seen on arrival at Paro International Airport on August 17, 2019, in Paro, Bhutan.

Crown Prince Fumihito, Crown Princess Kiko of Akishino, Prince Hisahito of Japan are welcomed by Princess Sonam Dechen Wangchuck, Princess Dechen Yangzom Wangchuck of Bhutan and Princess Euephelma Choden Wangchuck of Bhutan on arrival at Paro International Airport on August 17, 2019, in Paro, Bhutan.

Crown Prince Fumihito (C), Crown Princess Kiko of Akishino (L) and their son Prince Hisahito (R) visit the National Museum on August 17, 2019, in Paro, Bhutan.

Crown Prince Fumihito (C), Crown Princess Kiko of Akishino (L) and their son Prince Hisahito (R) visit the National Museum on August 17, 2019, in Paro, Bhutan.

Crown Prince Fumihito (C), Crown Princess Kiko of Akishino (L) and their son Prince Hisahito (R) visit the National Museum on August 17, 2019, in Paro, Bhutan.

Crown Prince Fumihito, Crown Princess Kiko of Akishino and their son Prince Hisahito meet members of the Japan International Cooperation Agency (JICA) on August 17, 2019, in Paro, Bhutan.

Crown Prince Fumihito and their son Prince Hisahito during the meeting with the members of the Japan International Cooperation Agency (JICA) on August 17, 2019, in Paro, Bhutan.

Prince Hisahito (R) of Japan are welcomed by Princess Dechen Yangzom Wangchuck (C) of Bhutan and Princess Euephelma Choden Wangchuck (L) of Bhutan on arrival at Paro International Airport on August 17, 2019, in Paro, Bhutan.

Crown Prince Fumihito, Crown Princess Kiko of Akishino, Prince Hisahito pose with Queen Mother Sangay Choden of Bhutan (2nd-R) and Princess Dechen Yangzom Wangchuck of Bhutan (L) at the National Textile Museum on August 19, 2019, in Thimphu, Bhutan.

Crown Prince Fumihito, Crown Princess Kiko of Akishino (L) and their son Prince Hisahito visit the National Textile Museum on August 19, 2019, in Thimphu, Bhutan.

Crown Prince Fumihito, Crown Princess Kiko of Akishino (L) and their son Prince Hisahito visit the National Textile Museum on August 19, 2019, in Thimphu, Bhutan.

Prince Hisahito tries Bhutan's traditional archery while Crown Prince Fumihito (R) at the Changlingmethang National Archery ground on August 19, 2019, in Thimphu, Bhutan.

Crown Prince Fumihito, Crown Princess Kiko of Akishino and Prince Hisahito visit the Tashichho Dzong for their meeting with King Jigme Khesar Namgyel Wangchuck of Bhutan on August 19, 2019, in Thimphu, Bhutan.

Crown Princess Kiko of Akishino and son Prince Hisahito visit the Tashichho Dzong for their meeting with King Jigme Khesar Namgyel Wangchuck of Bhutan on August 19, 2019, in Thimphu, Bhutan.

Crown Princess Kiko of Akishino and son Prince Hisahito visit the Tashichho Dzong for their meeting with King Jigme Khesar Namgyel Wangchuck of Bhutan on August 19, 2019, in Thimphu, Bhutan.

Prince Hisahito visits the Tashichho Dzong for their meeting with King Jigme Khesar Namgyel Wangchuck of Bhutan on August 19, 2019, in Thimphu, Bhutan.

Crown Prince Fumihito, Crown Princess Kiko of Akishino and their son Prince Hisahito visit the Tashichho Dzong for their meeting with King Jigme Khesar Namgyel Wangchuck of Bhutan on August 19, 2019, in Thimphu, Bhutan.

Crown Prince Fumihito, Crown Princess Kiko of Akishino and their son Prince Hisahito enjoy hiking on August 20, 2019, in Thimphu, Bhutan.

Crown Prince Fumihito, Crown Princess Kiko of Akishino and their son Prince Hisahito enjoy hiking on August 20, 2019, in Thimphu, Bhutan.

Crown Prince Fumihito, Crown Princess Kiko of Akishino and their son Prince Hisahito enjoy hiking on August 20, 2019, in Thimphu, Bhutan.

Crown Prince Fumihito, Crown Princess Kiko of Akishino and their son Prince Hisahito enjoy hiking on August 20, 2019, in Thimphu, Bhutan.

(2nd-L) Crown Prince Fumihito, Crown Princess Kiko of Akishino and their son Prince Hisahito watch takins on August 20, 2019, in Thimphu, Bhutan.

(2nd-L) Crown Prince Fumihito, Crown Princess Kiko of Akishino and their son Prince Hisahito watch takins on August 20, 2019, in Thimphu, Bhutan.

Prince Hisahito plays with local children as he visits a school on August 20, 2019, in Thimphu, Bhutan.

Prince Hisahito plays with local children as he visits a school on August 20, 2019, in Thimphu, Bhutan.

Japanese Princess Ayako get engaged to Kei Moriya an employee of a major shipping firm Nippon, their engagement was announced on June 26, 2018

Princess Mako (R) and her younger sister Princess Kako (L), granddaughters of Japan's Emperor Akihito, are pictured as they arrive at the venue of a concert marking the 60th anniversary of diplomatic relations between Indonesia and Japan on June 23, 2018, in Tokyo.

Princess Mako (R) and her younger sister Princess Kako (L), granddaughters of Japan's Emperor Akihito, are pictured as they arrive at the venue of a concert marking the 60th anniversary of diplomatic relations between Indonesia and Japan on June 23, 2018, in Tokyo.

Prince Hisahito (R), grandson of Japan's Emperor Akihito, and his mother Princess Kiko (L) are pictured at the venue of a concert marking the 60th anniversary of diplomatic relations between Indonesia and Japan on June 23, 2018, in Tokyo.

Photo shows Japanese Princess Ayako, the youngest daughter of Princess Hisako and the late Prince Takamado. She will get engaged to an employee of a major shipping firm, sources familiar with the matter said June 26, 2018.

Photo taken in March 2016 shows Japanese Princess Ayako at her graduation ceremony at Josai International University in Togane near Tokyo. Princess Ayako is the youngest daughter of Princess Hisako and the late Prince Takamado, Emperor Akihito's cousin.

Photo taken in January 2016 shows Japanese Princess Ayako greeting well-wishers gathered at the Imperial Palace in Tokyo. Princess Ayako is the youngest daughter of Princess Hisako and the late Prince Takamado, Emperor Akihito's cousin.

Photo taken in September 1990 shows Japanese Prince Takamado (L) and his wife Princess Hisako holding their third daughter Princess Ayako in front of Aiiku Hospital in Tokyo.

Photo taken Nov. 9, 2017, shows Japanese princesses (from L) Mako, Akiko, Yoko, Tsuguko and Ayako attending a biannual imperial garden party at the Akasaka Imperial Garden in Tokyo.

Kei Moriya, the fiance of Japanese Princess Ayako, is pictured as he returns home in Tokyo on June 26, 2018, after their engagement was announced earlier in the day. Princess Ayako, the youngest daughter of Emperor Akihito's late cousin Prince Takamado and Princess Hisako, will marry Moriya, who works for major shipping firm Nippon Yusen K.K., on Oct. 29.

Kei Moriya, the fiance of Japanese Princess Ayako, is pictured as he leaves home in Tokyo for work on June 27, 2018. Princess Ayako, the youngest daughter of Emperor Akihito's late cousin Prince Takamado and Princess Hisako, will marry Moriya, who works for major shipping firm Nippon Yusen K.K., on Oct. 29.

Kei Moriya, the fiance of Japanese Princess Ayako, is pictured as he returns home in Tokyo on June 26, 2018, after their engagement was announced earlier in the day. Princess Ayako, the youngest daughter of Emperor Akihito's late cousin Prince Takamado and Princess Hisako, will marry Moriya, who works for major shipping firm Nippon Yusen K.K., on Oct. 29.

Kei Moriya, the fiance of Japanese Princess Ayako, bows to reporters as he leaves home in Tokyo for work on June 27, 2018. Princess Ayako, the youngest daughter of Emperor Akihito's late cousin Prince Takamado and Princess Hisako, will marry Moriya, who works for major shipping firm Nippon Yusen K.K., on Oct. 29.

Kei Moriya, the fiance of Japanese Princess Ayako, is pictured as he returns home in Tokyo on June 26, 2018, after their engagement was announced earlier in the day. Princess Ayako, the youngest daughter of Emperor Akihito's late cousin Prince Takamado and Princess Hisako, will marry Moriya, who works for major shipping firm Nippon Yusen K.K., on Oct. 29.