Yi Bangja

Yi Bangja was portrayed by Naho Toda in the 2016 film The Last Princess.

Some members of the Nashimoto family, her relatives, visited Seoul in October 2008 to pay their respects. The Nashimotos have continued supporting her charity foundations for helping Korean physically challenged people even after the Princess died in 1989.

Yi Bangja died on 30 April 1989, aged 89, at the Nakseon Hall, Changdeok Palace from cancer. Her funeral was held as a semi-state funeral which Prince Mikasa and Princess Mikasa of Japan attended and she was buried beside her husband, Crown Prince Euimin, at the Hongyureung, Namyangju near Seoul.

After the end of World War II, all former royal and peerage titles were abolished by the American occupation authorities; ever since, Princess Masako took the Korean name Yi Bangja. Republic of Korea President Rhee Syng-man's fear of Crown Prince Euimin's popularity prevented the family's homecoming, and they lived in destitution as Korean residents in Japan. In November 1963, Yi Bangja and her family came back to Korea at the invitation of President Park Chung-hee and were allowed to live in Changdeok Palace in downtown Seoul. However, by this time, Crown Prince Euimin was already unconscious from cerebral thrombosis and was rushed to Seoul Sungmo Hospital where he remained bedridden for the rest of his life.

On 24 April 1926, Princess Masako received the formal title Her Royal Highness Princess Masako, Queen Yi (Japanese: 李王妃方子女王) when the Emperor Sunjong, the elder brother of Crown Prince Euimin, died. Under the terms of the Japan–Korea Annexation Treaty, the Korean royal title was demoted from that of "Emperor" to "King" and Crown Prince Euimin was never formally crowned as the monarch of Korea; therefore, Princess Masako would later be addressed as "Bangja, Crown Princess Euimin" in Korea. On 29 December 1931, she gave birth to a second son, Yi Ku.

Princess Masako was a leading candidate to wed the crown prince of Japan, the future Emperor Hirohito. Other candidates included Princess Nagako of Kuni (who became the future Empress Kōjun), and Tokiko Ichijō, a daughter of Prince Ichijō Saneteru. The possibility of infertility and the feeble political influence of her family were among the reasons she was removed from the list of candidates. However, Princess Masako was selected instead to wed Crown Prince Euimin of Korea who had been held by Japanese government under the pretense of studying abroad in 1917. The wedding was held on 28 April 1920, at the Korean royal residence in Tokyo. Princess Masako was still a student at the Girls' Department of the Gakushūin Peers' School at the time; her new title became Her Royal Highness Crown Princess of King Yi (Japanese: 李王世子妃). In addition, the title she received from birth, Princess Masako, still retained after she married. Despite an unfavorable fertility diagnosis prior to her marriage, she gave birth to a son, Prince Jin, on 18 August 1921. However, Prince Jin died under suspicious circumstances when she visited Korea with her husband on 11 May 1922.

Yi Bangja (Korean: 이방자, 4 November 1901 – 30 April 1989) was Queen of the Korean Empire as the wife of King Euimin of Korea.