Fumihito, Crown Prince of Japan in the context of "2019 Japanese imperial transition"

Michiko (美智子; born Michiko Shōda [正田 美智子 Shōda Michiko], 20 October 1934) is a member of the Imperial House of Japan who has been the Empress Emerita of Japan since 1 May 2019. She was the Empress of Japan as the wife of Akihito, the 125th Emperor of Japan reigning from 7 January 1989 to 30 April 2019.

Michiko married Crown Prince Akihito and became Crown Princess of Japan in 1959. She was the first commoner to marry into the Japanese imperial family. She has three children with her husband: Naruhito, Fumihito, and Sayako. Her elder son, Naruhito, is the current emperor. As crown princess and later as empress consort, she has become the most visible and widely travelled imperial consort in Japanese history. Upon Akihito's abdication, Michiko received the new title of Jōkōgō (上皇后), or Empress Emerita.

Kiko, Crown Princess Akishino (皇嗣文仁親王妃紀子, Kōshi Fumihito Shinnō-hi Kiko) (born Kiko Kawashima (川嶋紀子, Kawashima Kiko); 11 September 1966) is a member of the Imperial House of Japan. She is married to Crown Prince Fumihito, the heir presumptive to the Japanese throne.

Kiko earned a doctoral degree in humanities from Ochanomizu University. Her marriage to Crown Prince Fumihito in 1990 reflected a trend in which members of the imperial family married academically accomplished commoners from the middle class, continuing a pattern observed in previous and current generations. The couple has three children: Princess Mako, Princess Kako, and Prince Hisahito.

Aiko, Princess Toshi (敬宮愛子内親王, Toshi-no-miya Aiko Naishinnō; born 1 December 2001) is a member of the Imperial House of Japan. She is the only child of Emperor Naruhito and Empress Masako.

Following her birth, the ongoing Japanese imperial succession debate had resulted in some politicians holding a favorable view on rescinding agnatic primogeniture (male-only imperial succession) originally implemented in 1889 and retained by the Allies of World War II on the Constitution of Japan. However, once her uncle Crown Prince Fumihito had his son, Hisahito, in September 2006, Hisahito became second in the line of succession following his father. Aiko remains at present legally ineligible to inherit the throne and she cannot succeed her father, while debate about the possibility of having future empresses regnant continues.

Mako Komuro (小室 眞子, Komuro Mako; born 23 October 1991), formerly Princess Mako of Akishino (眞子内親王, Mako Naishinnō), is a Japanese art historian and a former member of the Japanese imperial family. She is the eldest child of Crown Prince Fumihito and Crown Princess Kiko, niece of Emperor Naruhito, and granddaughter of Emperor Emeritus Akihito and his wife, Empress Emerita Michiko.

Princess Kako of Akishino (佳子内親王, Kako Naishinnō; born 29 December 1994) is the second daughter of the Crown Prince and Crown Princess of Japan and a member of the Japanese imperial family. She is a niece of Emperor Naruhito and the second-eldest grandchild of Emperor Emeritus Akihito and Empress Emerita Michiko.