Japan Princess Ayako's Engagement Announcement at a Press Conference at the Imperial Household Agency in Tokyo on July 2, 2018

Kei Moriya, the fiance of Japanese Princess Ayako, the youngest daughter of Emperor Akihito's late cousin Prince Takamado, is pictured outside his home in Tokyo on July 2, 2018. The two will become officially engaged on Aug. 12 and hold a wedding ceremony on Oct. 29.

Kei Moriya, the fiance of Japanese Princess Ayako, the youngest daughter of Emperor Akihito's late cousin Prince Takamado, is pictured outside his home in Tokyo on July 2, 2018. The two will become officially engaged on Aug. 12 and hold a wedding ceremony on Oct. 29.

Princess Ayako (L), the youngest daughter of Emperor Akihito's late cousin Prince Takamado, and her mother Princess Hisako leave the Akasaka Estate, where they reside, in Tokyo on July 2, 2018, to meet with Empress Michiko. Princess Ayako will marry Kei Moriya, who works for major shipping firm Nippon Yusen K.K., on Oct. 29, 2018.

Princess Ayako, the youngest daughter of Emperor Akihito's late cousin Prince Takamado, and Kei Moriya attend a press conference at the Imperial Household Agency in Tokyo on July 2, 2018, following an official announcement of their engagement earlier in the day.

Japanese Princess Ayako, the youngest daughter of Emperor Akihito's late cousin Prince Takamado, arrives at the Imperial Palace, in Tokyo on July 2, 2018, to meet with Empress Michiko. Princess Ayako will marry Kei Moriya, who works for major shipping firm Nippon Yusen K.K., on Oct. 29, 2018.

Princess Ayako, the youngest daughter of Emperor Akihito's late cousin Prince Takamado, leaves the Akasaka Estate, the residence of the princess, in Tokyo on July 2, 2018, to meet with Empress Michiko. Princess Ayako will marry Kei Moriya, who works for major shipping firm Nippon Yusen K.K., on Oct. 29, 2018.

Princess Ayako, the youngest daughter of Emperor Akihito's late cousin Prince Takamado, leaves the Akasaka Estate, the residence of the princess, in Tokyo on July 2, 2018, to meet with Empress Michiko. Princess Ayako will marry Kei Moriya, who works for major shipping firm Nippon Yusen K.K., on Oct. 29, 2018.

Princess Ayako, the youngest daughter of Emperor Akihito's late cousin Prince Takamado, and Kei Moriya attend a press conference at the Imperial Household Agency in Tokyo on July 2, 2018, following an official announcement of their engagement earlier in the day.

Princess Ayako, the youngest daughter of Emperor Akihito's late cousin Prince Takamado, and Kei Moriya attend a press conference at the Imperial Household Agency in Tokyo on July 2, 2018, following an official announcement of their engagement earlier in the day.

Japanese Princess Ayako (L), the youngest daughter of Emperor Akihito's late cousin Prince Takamado, and her mother Princess Hisako leave the Imperial Palace in Tokyo on July 2, 2018, after meeting with Empress Michiko. Princess Ayako will marry Kei Moriya, who works for major shipping firm Nippon Yusen K.K., on Oct. 29, 2018.

Princess Ayako, the youngest daughter of Emperor Akihito's late cousin Prince Takamado, and Kei Moriya attend a press conference at the Imperial Household Agency in Tokyo on July 2, 2018, following an official announcement of their engagement earlier in the day.

Princess Ayako, the youngest daughter of Emperor Akihito's late cousin Prince Takamado, and Kei Moriya attend a press conference at the Imperial Household Agency in Tokyo on July 2, 2018, following an official announcement of their engagement earlier in the day.

Princess Ayako, the youngest daughter of Emperor Akihito's late cousin Prince Takamado, and Kei Moriya attend a press conference at the Imperial Household Agency in Tokyo on July 2, 2018, following an official announcement of their engagement earlier in the day.

Princess Mako (right) is engaged to Kei Komuro (left). But in Japan women are not allowed to succeed the throne, meaning that when the pair, both 25, tie the knot, she will lose her status

Emperor Akihito (left, with Empress Michiko at the centenary reception of the foundation of the America-Japan Society in Tokyo in April this year) has won plaudits for seizing upon the constitutionally-prescribed role of national symbol

Japan's Emperor Akihito (front left) and Empress Michiko (front right) mingle with members of the royal family during a spring garden party at the Akasaka Palace imperial garden in Tokyo on April 20, 2017

Princess Ayako said she had met Kei Moriya (L) in December last year and fallen in love with his 'kind, smart and decisive' personality

Japan's Princess Ayako has unveiled her 'commoner' fiance to the world ahead of a marriage which will mean the end of her royal status.

Princess Ayako and Kei Moriya will marry on October 29 at Tokyo's Meiji Jingu shrine, as Ayako becomes the second Japanese princess in less than two years to marry a commoner.

Journalists watch on as Princess Ayako and her fiance Kei Moriya speak to the press today, July 2, 2018

Japan's Princess Ayako (right) has unveiled her 'commoner' fiance Kei Moriya (left) to the world ahead of a marriage which will mean the end of her royal status

In September last year, Princess Mako, Emperor Akihito's oldest grandchild, and her college classmate Kei Komuro announced their engagement.

Kei Komuro, engaged to Princess Mako, the first grandchild of Emperor Akihito, speaks to reporters in Tokyo on May 17, 2017. Komuro, a former fellow student with the Princess at International Christian University, works at a Tokyo law firm while attending Hitotsubashi University's graduate school.

All grown up: Princess Mako (then four), father Prince Akishino, sister Princess Kako (then one) and mother Princess Kiko pose for photographs in Kanagawa, Japan in January 1996

Princess Mako of Akishino (R) and her fiance Kei Komuro (L) attend a press conference at the Akasaka Estate on September 3, 2017, in Tokyo, Japan. Princess Mako, a granddaughter of the emperor and empress, expressed delight with her engagement to her fiance, Kei Komuro, as the young couple exchanged smiles at a news conference.

Princess Mako of Akishino, granddaughter of Japan Emperor Akihito, to become engaged to a man who also went to Tokyo's International Christian University, an Imperial Household Agency source said on May 16, 2017.

Japan's Princess Mako pictured in December 2015, a granddaughter of Emperor Akihito. The 25-year-old Princess, the elder daughter of Prince Akishino, will soon become engaged to a man who also went to Tokyo's International Christian University, an Imperial Household Agency source said on May 16, 2017.

Japan's Princess Mako, a granddaughter of Emperor Akihito, posing at Tokyo's International Christian University ahead of a commencement ceremony in March 2014. The 25-year-old Princess will soon become engaged to a man who also went to the university, the Imperial Household Agency said on May 16, 2017.

Japan's Princess Mako after meeting with her grandparents, Emperor Akihito and Empress Michiko, at Tokyo's Imperial Palace on the occasion of her coming of age in October 2011. The 25-year-old Princess will soon become engaged to a man who also went to Tokyo's International Christian University, the Imperial Household Agency said on May 16, 2017.

Japan's Princess Mako, a granddaughter of Emperor Akihito, delivering a speech with sign language at a sign language speech contest among high school students in Tokyo in August 2016. The 25-year-old Princess will soon become engaged to a man who also went to Tokyo's International Christian University, the Imperial Household Agency said on May 16, 2017.

A street TV in Tokyo's Yurakucho area shows a news report saying that Princess Mako (L), the first grandchild of Japanese Emperor Akihito, will soon become engaged to Kei Komuro (R), a 25-year-old graduate student at Tokyo's Hitotsubashi University, on May 16, 2017.

Japan's Princess Mako (R), a granddaughter of Emperor Akihito, meeting children who lost their parents in the March 2011 earthquake and tsunami disaster, along with her father Prince Akishino (L) in Sendai, northeastern Japan in March 2014. The 25-year-old Princess will soon become engaged to a man who also went to Tokyo's International Christian University, the Imperial Household Agency said on May 16, 2017.

Japan's Princess Mako strolling while pulling the reins on a horse on a ranch near Vienna where she was staying on a home-stay program in August 2006. The 25-year-old Princess will soon become engaged to a man who also went to Tokyo's International Christian University, the Imperial Household Agency said on May 16, 2017.

Prince Akishino (L) and his wife Princess Kiko looking at their newborn daughter Princess Mako at the Imperial Household Hospital in Tokyo in November 1991. The 25-year-old Princess will soon become engaged to a man who also went to Tokyo's International Christian University, the Imperial Household Agency said on May 16, 2017.

A 9-month-old Princess Mako being held by her mother Princess Kiko in Karuizawa, Nagano Prefecture in August 1992. The 25-year-old Princess will soon become engaged to a man who also went to Tokyo's International Christian University, the Imperial Household Agency said on May 16, 2017.

Princess Mako (C) heading to an entrance ceremony for the Gakushuin Primary School in Tokyo with her parents, Prince Akishino (L) and Princess Kiko in April 1998. The 25-year-old Princess will soon become engaged to a man who also went to Tokyo's International Christian University, the Imperial Household Agency said on May 16, 2017.

Princess Mako, the first grandchild of Japanese Emperor Akihito and the elder daughter of Prince Akishino, attends the annual New Year Poetry Reading Ceremony at the Imperial Palace in Tokyo on January 13, 2017. The 25-year-old Princess is set to become engaged to a man who was in the same class year as her at Tokyo's International Christian University.

Kei Komuro, who will soon become engaged to Princess Mako, a granddaughter of Emperor Akihito, leaves his home in Yokohama on the morning of May 17, 2017. Komuro is a graduate student at Tokyo's Hitotsubashi University and an employee of a legal firm in the capital.

Kei Komuro, who will soon become engaged to Princess Mako, the first grandchild of Emperor Akihito, speaks to reporters in Tokyo on May 17, 2017. Komuro, a former fellow student with the Princess at International Christian University, works at a Tokyo law firm while attending Hitotsubashi University's graduate school.

Japanese Princess Mako leaves her residence in Tokyo on May 17, 2017. The Imperial Household Agency said the first grandchild of Emperor Akihito will soon become engaged to Kei Komuro, told reporters the same day he will speak about the engagement when 'the time comes.'

Kei Komuro, who will soon become engaged to Princess Mako, the first grandchild of Emperor Akihito, speaks to reporters in Tokyo on May 17, 2017. Komuro, a former fellow student with the Princess at International Christian University, works at a Tokyo law firm while attending Hitotsubashi University's graduate school.