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Masako Sen (千 容子, Sen Masako, born 23 October 1951), formerly Princess Masako of Mikasa (容子内親王, Masako Naishinnō), is the fourth child and second daughter of Takahito, Prince Mikasa and Yuriko, Princess Mikasa.[1] She married Soshitsu Sen on 14 October 1983. As a result, she gave up her imperial title and left the Japanese Imperial Family, as required by law.

Masako Sen
BornMasako (容子)
(1951-10-23) 23 October 1951 (age 67)
Tokyo, Japan
Sōshitsu Sen XVI (m. 1983)
  • Myeongsa Kikuchi
  • Makiko Sakata
  • Takafumi Sen
HouseImperial House of Japan (until 1983)
FatherTakahito, Prince Mikasa
MotherYuriko Takagi



For her early education as a child, Sen attended Gakushuin Elementary School and then Gakushuin Women's Secondary School. She later enrolled in the Department of Japanese Language and Literature, Faculty of Letters, Gakushuin University. After completing three years, she was sent to a boarding school in Switzerland and moved to Paris for studying in the University of Sorbonne.

Marriage and familyEdit

Princess Masako married Sōshitsu Sen XVI (b. 1956) on 14 October 1983. Upon her marriage, she left the Imperial Family and took the surname of her husband.[1] Soshitsu Sen is the elder son of Soshitsu Sen XV, and currently the sixteenth hereditary grand master (Iemoto) of the Urasenke, Japanese Tea Ceremony School.

The couple have two sons and one daughter:

  • Myeongsa Kikuchi (born 10 November 1984), changing his name from "Akifumi Sen" in 2014[2][3]
  • Makiko Sakata (born 11 July 1987), married in 2017 to Munehiro Sakata[4]
  • Takafumi Sen (born 6 July 1990)

Titles and stylesEdit

Styles of
Princess Masako of Mikasa
(before her marriage)
Reference styleHer Imperial Highness
Spoken styleYour Imperial Highness
  • 23 October 1951 – 14 October 1983: Her Imperial Highness Princess Masako of Mikasa
  • 14 October 1983 – present: Mrs. Soshitsu Sen