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TOKYO, JAPAN - FEBRUARY 23: (----EDITORIAL USE ONLY MANDATORY CREDIT - 'GETTY IMAGES / TOMOHIRO OHSUMI / POOL' - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS----) Japanese Emperor Naruhito (L) and Empress Masako (R) wave to well-wishers on the balcony of the Imperial Palace on February 23, 2024 in Tokyo, Japan. Emperor Naruhito appeared to greet the public on his 64th birthday, flanked by Empress Masako and other members of the Japanese Royal Family. (Photo by Getty Images / Tomohiro Ohsumi / POOL/Anadolu via Getty Images)

TOKYO, JAPAN - FEBRUARY 23: (----EDITORIAL USE ONLY MANDATORY CREDIT - 'GETTY IMAGES / TOMOHIRO OHSUMI / POOL' - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS----) Japanese Emperor Naruhito (L) and Empress Masako (R) wave to well-wishers on the balcony of the Imperial Palace on February 23, 2024 in Tokyo, Japan. Emperor Naruhito appeared to greet the public on his 64th birthday, flanked by Empress Masako and other members of the Japanese Royal Family. (Photo by Getty Images / Tomohiro Ohsumi / POOL/Anadolu via Getty Images)
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TOKYO, JAPAN - FEBRUARY 23: (----EDITORIAL USE ONLY MANDATORY CREDIT - 'GETTY IMAGES / TOMOHIRO OHSUMI / POOL' - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS----) (L-R) Japanese Emperor Naruhito, Empress Masako and their daughter Princess Aiko wave to well-wishers on the balcony of the Imperial Palace on February 23, 2024 in Tokyo, Japan. Emperor Naruhito appeared to greet the public on his 64th birthday, flanked by Empress Masako and other members of the Japanese Royal Family. (Photo by Getty Images / Tomohiro Ohsumi / POOL/Anadolu via Getty Images)

TOKYO, JAPAN - FEBRUARY 23: (----EDITORIAL USE ONLY MANDATORY CREDIT - 'GETTY IMAGES / TOMOHIRO OHSUMI / POOL' - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS----) (L-R) Japanese Emperor Naruhito, Empress Masako and their daughter Princess Aiko wave to well-wishers on the balcony of the Imperial Palace on February 23, 2024 in Tokyo, Japan. Emperor Naruhito appeared to greet the public on his 64th birthday, flanked by Empress Masako and other members of the Japanese Royal Family. (Photo by Getty Images / Tomohiro Ohsumi / POOL/Anadolu via Getty Images)
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TOKYO, JAPAN - FEBRUARY 23: (----EDITORIAL USE ONLY MANDATORY CREDIT - 'GETTY IMAGES / TOMOHIRO OHSUMI / POOL' - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS----) Japanese Emperor Naruhito (C) and Empress Masako (2-R) wave to well-wishers as Crown Princess Kiko (L), Crown Prince Akishino (2-L) and Princess Aiko (R) look on the balcony of the Imperial Palace on February 23, 2024 in Tokyo, Japan. Emperor Naruhito appeared to greet the public on his 64th birthday, flanked by Empress Masako and other members of the Japanese Royal Family. (Photo by Getty Images / Tomohiro Ohsumi / POOL/Anadolu via Getty Images)

TOKYO, JAPAN - FEBRUARY 23: (----EDITORIAL USE ONLY MANDATORY CREDIT - 'GETTY IMAGES / TOMOHIRO OHSUMI / POOL' - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS----) Japanese Emperor Naruhito (C) and Empress Masako (2-R) wave to well-wishers as Crown Princess Kiko (L), Crown Prince Akishino (2-L) and Princess Aiko (R) look on the balcony of the Imperial Palace on February 23, 2024 in Tokyo, Japan. Emperor Naruhito appeared to greet the public on his 64th birthday, flanked by Empress Masako and other members of the Japanese Royal Family. (Photo by Getty Images / Tomohiro Ohsumi / POOL/Anadolu via Getty Images)
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TOKYO, JAPAN - FEBRUARY 23: (----EDITORIAL USE ONLY MANDATORY CREDIT - 'GETTY IMAGES / TOMOHIRO OHSUMI / POOL' - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS----) (L-R) Princess Kako of Akishino, Crown Princess Kiko and Crown Prince Akishino stand on the balcony of the Imperial Palace on February 23, 2024 in Tokyo, Japan. Emperor Naruhito appeared to greet the public on his 64th birthday, flanked by Empress Masako and other members of the Japanese Royal Family. (Photo by Getty Images / Tomohiro Ohsumi / POOL/Anadolu via Getty Images)

TOKYO, JAPAN - FEBRUARY 23: (----EDITORIAL USE ONLY MANDATORY CREDIT - 'GETTY IMAGES / TOMOHIRO OHSUMI / POOL' - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS----) (L-R) Princess Kako of Akishino, Crown Princess Kiko and Crown Prince Akishino stand on the balcony of the Imperial Palace on February 23, 2024 in Tokyo, Japan. Emperor Naruhito appeared to greet the public on his 64th birthday, flanked by Empress Masako and other members of the Japanese Royal Family. (Photo by Getty Images / Tomohiro Ohsumi / POOL/Anadolu via Getty Images)
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TOKYO, JAPAN - FEBRUARY 23: (----EDITORIAL USE ONLY MANDATORY CREDIT - 'GETTY IMAGES / TOMOHIRO OHSUMI / POOL' - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS----) Police officers escort well-wishers arriving for the appearance by Japanese Emperor Naruhito (not seen) at the Imperial Palace on February 23, 2024 in Tokyo, Japan. Emperor Naruhito appeared to greet the public on his 64th birthday, flanked by Empress Masako and other members of the Japanese Royal Family. (Photo by Getty Images / Tomohiro Ohsumi / POOL/Anadolu via Getty Images)

TOKYO, JAPAN - FEBRUARY 23: (----EDITORIAL USE ONLY MANDATORY CREDIT - 'GETTY IMAGES / TOMOHIRO OHSUMI / POOL' - NO MARKETING NO ADVERTISING CAMPAIGNS - DISTRIBUTED AS A SERVICE TO CLIENTS----) Police officers escort well-wishers arriving for the appearance by Japanese Emperor Naruhito (not seen) at the Imperial Palace on February 23, 2024 in Tokyo, Japan. Emperor Naruhito appeared to greet the public on his 64th birthday, flanked by Empress Masako and other members of the Japanese Royal Family. (Photo by Getty Images / Tomohiro Ohsumi / POOL/Anadolu via Getty Images)
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