Princess Kako departs at Tokyo's Haneda airport for studying at University of Leeds in England on September 12, 2017

Japanese Princess Kako, granddaughter of Emperor Akihito and Empress Michiko, is pictured at Tokyo's Haneda airport on Sept. 12, 2017, before departing for Leeds in England via London. Princess Kako, the younger sister of recently engaged Princess Mako, will study at the University of Leeds through June 2018.

Japanese Princess Kako, granddaughter of Emperor Akihito and Empress Michiko, is pictured at Tokyo's Haneda airport on Sept. 12, 2017, she will study at the University of Leeds in England through June 2018.

Japanese Princess Kako, granddaughter of Emperor Akihito and Empress Michiko, is pictured at Tokyo's Haneda airport on Sept. 12, 2017, before departing for Leeds in England via London. Princess Kako, the younger sister of recently engaged Princess Mako, will study at the University of Leeds through June 2018.

Japanese Princess Kako, granddaughter of Emperor Akihito and Empress Michiko, is pictured at Tokyo's Haneda airport on Sept. 12, 2017, before departing for Leeds in England via London, to study at the University of Leeds through June 2018.

 Princess Kako of Akishino is seen on departure at Haneda International Airport on September 12, 2017 in Tokyo, Japan. Kako, 22, will study history, theory and other subjects in theatrical art at the School of Performance and Cultural Industries of the University of Leeds until June 2018.

Princess Kako of Akishino is seen on departure at Haneda International Airport on September 12, 2017 in Tokyo, Japan. Kako, 22, will study history, theory and other subjects in theatrical art at the School of Performance and Cultural Industries of the University of Leeds until June 2018.

Princess Kako of Akishino is seen on departure at Haneda International Airport on September 12, 2017 in Tokyo, Japan. Kako, 22, will study history, theory and other subjects in theatrical art at the School of Performance and Cultural Industries of the University of Leeds until June 2018.

Princess Kako of Akishino is seen on departure at Haneda International Airport on September 12, 2017 in Tokyo, Japan. Kako, 22, will study history, theory and other subjects in theatrical art at the School of Performance and Cultural Industries of the University of Leeds until June 2018.

Princess Kako of Akishino is seen on departure at Haneda International Airport on September 12, 2017 in Tokyo, Japan. Kako, 22, will study history, theory and other subjects in theatrical art at the School of Performance and Cultural Industries of the University of Leeds until June 2018.

Princess Kako of Akishino is seen on departure at Haneda International Airport on September 12, 2017 in Tokyo, Japan. Kako, 22, will study history, theory and other subjects in theatrical art at the School of Performance and Cultural Industries of the University of Leeds until June 2018.

Princess Kako of Akishino is seen on departure at Haneda International Airport on September 12, 2017 in Tokyo, Japan. Kako, 22, will study history, theory and other subjects in theatrical art at the School of Performance and Cultural Industries of the University of Leeds until June 2018.

Princess Kako of Akishino is seen on departure at Haneda International Airport on September 12, 2017 in Tokyo, Japan. Kako, 22, will study history, theory and other subjects in theatrical art at the School of Performance and Cultural Industries of the University of Leeds until June 2018.

Princess Kako of Akishino is seen on departure at Haneda International Airport on September 12, 2017 in Tokyo, Japan. Kako, 22, will study history, theory and other subjects in theatrical art at the School of Performance and Cultural Industries of the University of Leeds until June 2018.