Japan's Princess Mako postpones engagement: 'We feel extremely sorry for causing great trouble'

Japan's Princess Mako will remain a royal a little while longer, revealing on Tuesday that she's postponing her wedding to commoner Kei Komuro.

The reason? The couple, who wanted to tie the knot in 2018, wanted more time to plan their nuptials. Instead, they will get married in 2020, waiting until after Mako's grandfather Emperor Akihito abdicates next year. 

According to CNN, the couple had "rushed carious things" and needed more time to prepare.

12 PHOTOS
Princess Mako through the years
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Princess Mako through the years
Princess Mako, the elder daughter of Prince Akishino and Princess Kiko, speaks to media with her fiancee Kei Komuro, a university friend of Princess Mako, during a press conference to announce their engagement at Akasaka East Residence in Tokyo, Japan, September 3, 2017. REUTERS/Shizuo Kambayashi/Pool
Princess Mako, the elder daughter of Prince Akishino and Princess Kiko, and her fiancee Kei Komuro, a university friend of Princess Mako, smile during a press conference to announce their engagement at Akasaka East Residence in Tokyo, Japan, September 3, 2017. REUTERS/Shizuo Kambayashi/Pool TPX IMAGES OF THE DAY
Prince and Princess Akishino relax with their daughter Princess Mako (C) at their palace in Tokyo. Prince Akishino (R), brother of Crown Prince Naruhito, celebrates his 28th birthday November 30th . Photo taken 8NOV93
Japan's Prince Akishino and his wife Princess Kiko pose with their daughters Mako (L) and Kako on the Akasaka Palace grounds in Tokyo, in this picture released by the Imperial Household Agency on November 29, 2005 for distribution on November 30, 2005. The prince celebrates his 40th birthday on Wednesday. Picture taken November 1, 2005. FOR EDITORIAL USE ONLY REUTERS/Imperial Household Agency/Handout
Japan's Prince Akishino (R) and his daughters, Princess Mako (L) and Princess Kako, arrive at Aiiku hospital in Tokyo September 6, 2006 to see Princess Kiko and her newly-born baby boy. Princess Kiko gave birth on Wednesday to a baby boy, the first imperial male heir to be born in more than four decades and the answer to the prayers of conservatives keen to keep women off the ancient throne. REUTERS/Toshifumi Kitamura/Pool
Japan's Princess Mako, the first daughter of Prince Akishino and Princess Kiko, admires a wooden carving by Japanese sculptor Koun Takamura (1852-1934) titled "Sericulture nymph," undergoing restoration at an artefact repository at the Imperial Palace in Tokyo, in this handout picture taken October 8, 2011 and released by the Imperial Household Agency of Japan. Mako, a granddaughter of Emperor Akihito and Empress Michiko, celebrates her 20th birthday on October 23, 2011. REUTERS/The Imperial Household Agency of Japan/Handout (JAPAN - Tags: ROYALS ENTERTAINMENT) FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS
Japan's Prince Hisahito (C) is flanked by his sisters Princess Mako (L) and Princess Kako in the Akasaka imperial estate in Tokyo in this August 14, 2012 handout photo by the Imperial Household Agency of Japan made available to Reuters on September 6, 2012. Hisahito turned six on September 6, 2012. Picture taken August 14, 2012. REUTERS/The Imperial Household Agency of Japan/Handout (JAPAN - Tags: PROFILE ROYALS) FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS
Japan's Prince Akishino (C) and his wife Princess Kiko (2nd R) are seated with their children Princess Mako (L-R), Prince Hisahito, and Princess Kako at the Akasaka imperial estate in Tokyo in this photo taken November 16, 2013 and released by Imperial Household Agency of Japan. Akishino, the second son of Emperor Akihito and Empress Michiko, celebrates his 48th birthday on November 30, 2013. REUTERS/Imperial Household Agency of Japan/Handout via Reuters (JAPAN - Tags: POLITICS ROYALS) ATTENTION EDITORS - FOR EDITORIAL USE ONLY. NOT FOR SALE FOR MARKETING OR ADVERTISING CAMPAIGNS. THIS IMAGE HAS BEEN SUPPLIED BY A THIRD PARTY. IT IS DISTRIBUTED, EXACTLY AS RECEIVED BY REUTERS, AS A SERVICE TO CLIENTS
Princess Mako (L) and Princess Kako wave to well-wishers during the Japanese royal family's New Year public appearance at the Imperial Palace in Tokyo January 2, 2015. REUTERS/Thomas Peter (JAPAN - Tags: ROYALS ENTERTAINMENT SOCIETY POLITICS)
Japan's Princess Mako attends a concert at the National School of Music in Tegucigalpa, Honduras, December 9, 2015. REUTERS/Jorge Cabrera
Japan's Princess Mako arrives before a meeting with Paraguay's President Horacio Cartes at the presidential residence in Asuncion, Paraguay September 8, 2016. REUTERS/Jorge Adorno
Japan's Princess Mako is seen after her arrival at the Silvio Pettirossi International Airport in Luque, Paraguay September 7, 2016. REUTERS/Jorge Adorno
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"I wish to think about marriage more deeply and concretely and give sufficient time to prepare our marriage and for after the marriage," Mako said. The couple also apologized to the nation: "We feel extremely sorry for causing great trouble and a further burden to those who have willingly supported us."

The couple of five years announced their engagement in early September. At the time, the Imperial Household said the marriage will further deplete the royal family since Mako must become a commoner. 

19 PHOTOS
Royal engagement rings
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Royal engagement rings
Grace Kelly and Prince Rainier
Prince Rainier III of Monaco announced their engagement in January 1956. The royal proposed to the actress with a stunning Cartier eternity band. 
Grace Kelly and Prince Rainier
The 10.5-carat diamond, surrounded by two baguettes was the second ring given by Prince Rainier. The first ring was a simple eternity band embellished with diamonds and rubies.  
Crown Princess Victoria of Sweden and Prince Daniel

Daniel Westling and Crown Princess Victoria of Sweden announced their engagement on February 24, 2009 in Stockholm, Sweden. 

Crown Princess Victoria of Sweden and Prince Daniel
The simple and single solitaire was a break from the traditional gold bands many brides sport in Sweden. However, on her wedding day, Victoria was presented with an additional diamond wedding band. 
Queen Elizabeth and Prince Philip
Prince Philip proposed in 1947 with a simple 3-carat solitaire surrounded by 5 diamonds on each side. 
Queen Elizabeth and Prince Philip
The ring featured diamonds taken from the tiara of Philip's mother, Princess Andrew of Greece. It was reportedly far too large for Elizabeth, who had it resized quickly to announce her engagement. 
Prince Charles and Princess Diana

Prince Charles and Lady Diana Spencer announced their engagement in London on Feb. 24, 1981. He proposed with a 12-carat blue sapphire ring that was surrounded by 14 solitaire diamonds, made by famed jewelers Garrad. 

It cost $36,000 to make at the time. 

Prince William and Duchess Kate
In 2010, Prince William proposed to Kate Middleton with the same ring.
Prince William and Duchess Kate

The blue sapphire and diamond ring is reportedly worth $500,000 today. 

King Felipe of Spain and Queen Letizia
Crown Prince Felipe of Spain proposed to Letizia Ortiz on November 6, 2003. 
King Felipe of Spain and Queen Letizia

The non-traditional eternity band featured 16 diamond baguettes and a white gold trim. It was designed by Suarez jewelers.

After the wedding, Letizia swapped the ring for a simpler band. 

Prince Carl Philip and Princess Sofia
Swedish Prince Carl Philip announced his engagement to Sofia in 2014 after four years of dating. He proposed with an 'unusual' ring that estimated over £10,073. 
Prince Carl Philip and Princess Sofia
The center stone is surrounded by a halo and features two split diamond eternity bands. 
King Willem-Alexander and Queen Maxima

Netherland's Queen Maxima and King Willem-Alexander got engaged in 2001 after two years of dating. The ring features an unusual color and shape. 

King Willem-Alexander and Queen Maxima

The oval-shaped orange diamond is surrounded by two additional teardrop diamonds. The color is symbolic of the color of the Netherlands. 

Experts valued the stone anywhere from £15,000 and £150,000, says The Daily Mail

Prince Andrew and the Duchess of York
Prince Andrew, youngest son of Queen Elizabeth and Prince Philip, proposed to Sarah Ferguson in 1986 with a ring by the same designer as Princess Diana's ring. The two had reportedly known each other since they were young children but divorced in 1996. 
Prince Andrew and the Duchess of York

The Duke proposed with an unusual ring -- an oval Burmese ruby flanked by ten diamonds arranged in a floral shape. The ring sits on a thin yellow and white band.

Ferguson's ring reportedly set the trend for ruby engagement rings throughout Britain. 

Prince Albert of Monaco and Princess Charlene
Prince Albert of Monaco proposed to Princess Charlene in 2010 with a stunning cut valued at over £50,000.
Prince Albert of Monaco and Princess Charlene
The 3-carat pear-shaped ring was designed by jewelers Maison Repossi and is embellished on both sides with white diamonds. 
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Princess Mako is the emperor's oldest grandchild. The 84-year-old ruler is set to abdicate the throne next year on April 30, with Crown Prince Naruhito, his eldest son, succeeding the Chrysanthemum throne the next day.

Check out the video above for more on the princess. 

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