Upon returning to Japan, the prince took on leadership positions in the Shanghai Expeditionary Army and Imperial Guard, becoming an army general.
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The princess came to France to nurse him and learned much about Art Deco at a 1925 exposition.
At the 1964 Summer Olympics in neighboring Tokyo, the city hosted the riding part of the modern pentathlon event at Asaka Nezu Park.
In August 1992, Daewoo set up UzDaewooAuto, a joint venture in Asaka, Uzbekistan, leveraging the presence of a large local ethnic Korean minority.
During that period, Prince and Princess Asaka became enthralled with the Art Deco movement.