Mako has been considered by some to be an internet idol since 2004, when images of her in sailor fuku appeared on television. An image repository was set up, and a video featuring fanart of Komuro was uploaded onto the popular video-sharing website Nico Nico Douga, attracting over 340,000 views and 86,000 comments. The Imperial Household Agency, responding to a request for comment, stated that they were not sure how they should handle this phenomenon, since they saw no signs of slander or insults against the Imperial Family.[15]
In 2011, Princess Mako came of age and was conferred Grand Cordon of the Order of the Precious Crown on 23 October. Since then, she began attending official events as an adult member of the Imperial Family.[16] She gave her patronage to a number of organizations, including the Japan Tennis Association and the Japan Kōgei Association.[5]
In August 2006, Mako visited Vienna, Austria for two weeks on a school-sponsored homestay program. She stayed in the home of an Austrian citizen who was a colleague of Tatsuhiko Kawashima, her maternal grandfather. Because Mako is interested in art and architecture, she visited the museums, St. Stephen's Cathedral and Schönbrunn Palace.[24][25]
In April 2022, it was reported that she was working as an unpaid volunteer at the Metropolitan Museum of Art, assisting curators within the museum's Asian art collection.[28]
In May 2017, it was announced that the Princess was expected to marry Kei Komuro.[29] The two, both students at International Christian University (ICU), had met at a study abroad event in Tokyo. Komuro proposed to the Princess in December 2013.[30]
The wedding was originally expected to take place in November 2018,[31] but it was postponed after media reports of Komuro's mother in dispute with her former fiancé over ¥4 million ($36,000). Some of the money had been used to pay Komuro's tuition fees, and the dispute resulted in the public's disapproval of the match.[32][33] Komuro stated that his mother believed the money was a gift and added that he wished to pay it back.[17] Princess Mako blamed the postponement on the couple's immaturity at that time.[30]
On 26 October 2021, Princess Mako officially married Komuro following the submission of their marriage document at the local ward office.[34][35] Like her paternal aunt, Sayako, Princess Nori, and other princesses who married commoners in recent decades, she formally lost her title and became a commoner upon marriage as required by Imperial Household Law.[17] In light of criticism of her marriage, she refused the Japanese government's taxpayer funded payment of ¥140 million (US$1.3 million) given to royal women upon leaving the Imperial Family.[36] She is the first female member of the imperial family to forgo an official wedding ceremony and a gift of money from the government.[37]
By law, royals who give up their titles are not allowed to live inside the imperial quarters with their families.[38] For this reason, Mako moved to her own residence in the Shibuya district in Tokyo while awaiting her passport issuance and US Visa. Komuro paid his mother's ex an undisclosed sum of money to resolve the debt with his mother in November 2021.[39] The couple departed for New York that same month.[40]
Weeks before her planned wedding, the Imperial Household Agency announced on behalf of Princess Mako that she had recently been diagnosed with complex post-traumatic stress disorder (C-PTSD) by the head of the quality assurance room of the NTT Tokyo Medical Center.[44] The diagnosis determined that the C-PTSD originated during her primary high school years and continued due to strong criticism from imperial family members and the media.[45][33][46]
Mako was styled as Her Imperial Highness Princess Mako[5] until her marriage on 26 October 2021, after which she became known as Mrs. Kei Komuro.[47][48]
^"ネットで大人気「眞子様萌え」! 宮内庁は困惑気味?" [Popular on the net, "Mako-sama Moe"! Is the Imperial Household Agency confused ?]. Yahoo! Netallica (in Japanese). 15 June 2008. Archived from the original on 18 June 2008.