(L) Emperor Naruhito of Japan delivers his message, expressing his wishes during his birthday celebration, alongside Empress Masako, at the Imperial Palace on February 23, 2023, Tokyo, Japan. People gathered to celebrate Naruhito's birthday at the Imperial Palace. Rodrigo Reyes Marin/Pool via REUTERS 

(L to R) Emperor Naruhito of Japan and his wife Empress Masako greet visitors during his birthday celebration at the Imperial Palace on February 23, 2023, Tokyo, Japan. People gathered to celebrate Naruhito’s birthday at the Imperial Palace. Rodrigo Reyes Marin/Pool via REUTERS 

Japan's Emperor Naruhito greets people during his birthday celebration at the Imperial Palace in Tokyo, Japan, February 23, 2023.Rodrigo Reyes Marin/Pool via REUTERS 

Japan's Emperor Naruhito, Empress Masako attend the Imperial Guard New Year Review at the Imperial Palace Friday, Jan. 20, 2023, in Tokyo. Eugene Hoshiko/AP/Pool via REUTERS 

Japan's Emperor Naruhito, Empress Masako are escorted to attend the Imperial Guard New Year Review at the Imperial Palace Friday, Jan. 20, 2023, in Tokyo, Japan. Eugene Hoshiko/AP/Pool via REUTERS 

Japan's Emperor Naruhito, Empress Masako are escorted to attend the Imperial Guard New Year Review at the Imperial Palace Friday, Jan. 20, 2023, in Tokyo. Eugene Hoshiko/AP/Pool via REUTERS 

Japan's imperial family members: Former Empress Michiko, former Emperor Akihito, Emperor Naruhito, Empress Masako and Princess Aiko waves to well-wishers for the New Year's greetings at the Imperial Palace in Tokyo on January 2, 2023, for the first time in three years. YOSHIKAZU TSUNO/Pool via REUTERS 

Japan's imperial family members: Former Empress Michiko, former Emperor Akihito, Emperor Naruhito, Empress Masako, Princess Aiko, Crown Prince Akishino, Crown Princess Kiko and Princess Kako waves to well-wishers for the New Year's greetings at the Imperial Palace in Tokyo on January 2, 2023, the first time in three years. YOSHIKAZU TSUNO/Pool via REUTERS 

Japan's imperial family members, former Empress Michiko, former Emperor Akihito, Emperor Naruhito, Empress Masako, Princess Aiko, Crown Prince Akishino and Crown Princess Kiko waves to well-wishers for the New Year's greetings at the Imperial Palace in Tokyo on January 2, 2023, the first time in three years. YOSHIKAZU TSUNO/Pool via REUTERS 

Japan's Emperor Naruhito and former emperor Emeritus Akihito, attend a public appearance at the Imperial Palace in Tokyo Monday, Jan, 2, 2023. Shuji Kajiyama/Pool via REUTERS 

Well-wishers wave flags during Japan's Emperor Naruhito's public appearance with his family at the Imperial Palace in Tokyo, Sunday, Jan. 2, 2023. Shuji Kajiyama/Pool via REUTERS 

Japan's Emperor Naruhito and Empress Masako and their daughter Princess Aiko wave to well-wishers through a bullet-proof glass from a balcony during their New Year's public appearance at the Imperial Palace in central Tokyo, Japan, 02 January 2023. It was Emperor Naruhito's first New Year's greetings to the public since 2020. FRANCK ROBICHON/Pool via REUTERS 

TOKYO, JAPAN - JANUARY 02: Emperor Emeritus Akihito, Empress Emerita Michiko, Emperor Naruhito and Empress Masako attend the New Year's appearance by the Japanese royal family at the Imperial Palace on January 2, 2023 in Tokyo, Japan. The event was held for the first time in three years, following a hiatus due to the coronavirus pandemic. Tomohiro Ohsumi/Pool via REUTERS 

TOKYO, JAPAN - JANUARY 02: Emperor Emeritus Akihito, Empress Emerita Michiko, Emperor Naruhito, Empress Masako, Crown Prince Fumihito of Akishino and Crown Princess Kiko of Akishino attend the New Year's appearance by the Japanese royal family at the Imperial Palace on January 2, 2023 in Tokyo, Japan. The event was held for the first time in three years, following a hiatus due to the coronavirus pandemic. Tomohiro Ohsumi/Pool via REUTERS 

TOKYO, JAPAN - JANUARY 02: Emperor Emeritus Akihito, Empress Emerita Michiko, Emperor Naruhito, Empress Masako, Princess Aiko, Crown Prince Fumihito of Akishino, Crown Princess Kiko of Akishino and Princess Kako of Akishino wave during the New Year's appearance by the Japanese royal family at the Imperial Palace on January 2, 2023 in Tokyo, Japan. The event was held for the first time in three years, following a hiatus due to the coronavirus pandemic. Tomohiro Ohsumi/Pool via REUTERS 

TOKYO, JAPAN - JANUARY 02: Princess Akiko of Mikasa, Princess Nobuko of Mikasa, Emperor Emeritus Akihito, Empress Emerita Michiko, Emperor Naruhito, Empress Masako, Princess Aiko, Crown Prince Fumihito of Akishino, Crown Princess Kiko of Akishino, Princess Kako of Akishino, Princess Hisako of Takamado and Princess Tsuguko of Takamado wave during the New Year's appearance by the Japanese royal family at the Imperial Palace on January 2, 2023 in Tokyo, Japan. The event was held for the first time in three years, following a hiatus due to the coronavirus pandemic. Tomohiro Ohsumi/Pool via REUTERS 

TOKYO, JAPAN - JANUARY 02: Japan's Emperor Naruhito waves as Empress Masako looks on during the New Year's appearance by the Japanese royal family at the Imperial Palace on January 2, 2023 in Tokyo, Japan. The event was held for the first time in three years, following a hiatus due to the coronavirus pandemic. Tomohiro Ohsumi/Pool via REUTERS 

TOKYO, JAPAN - JANUARY 02: Japan's Emperor Naruhito waves as Empress Masako looks on during the New Year's appearance by the Japanese royal family at the Imperial Palace on January 2, 2023 in Tokyo, Japan. The event was held for the first time in three years, following a hiatus due to the coronavirus pandemic. Tomohiro Ohsumi/Pool via REUTERS 

TOKYO, JAPAN - JANUARY 02: Former emperor Emeritus Akihito and Empress Emerita Michiko, Emperor Naruhito and Empress Masako attend the New Year's appearance by the Japanese royal family at the Imperial Palace on January 2, 2023 in Tokyo, Japan. The event was held for the first time in three years, following a hiatus due to the coronavirus pandemic. Tomohiro Ohsumi/Pool via REUTERS 

TOKYO, JAPAN - JANUARY 02: Emperor Emeritus Akihito, Empress Emerita Michiko, Emperor Naruhito, Empress Masako, Princess Aiko, Crown Prince Fumihito of Akishino, Crown Princess Kiko of Akishino and Princess Kako of Akishino attend the New Year's appearance by the Japanese royal family at the Imperial Palace on January 2, 2023 in Tokyo, Japan. The event was held for the first time in three years, following a hiatus due to the coronavirus pandemic. Tomohiro Ohsumi/Pool via REUTERS 

Japan's Emperor Naruhito waves as Empress Masako, former Japanese emperor Akihito and former empress Michiko, appear before well-wishers during the traditional New Year's greeting ceremony by Japan's royal family at the Imperial Palace in Tokyo on January 2, 2023. PHILIP FONG/Pool via REUTERS 

Japan's Emperor Naruhito and Empress Masako look on as former Japanese emperor Akihito and former empress Michiko appear before well-wishers during the traditional New Year's greeting ceremony by Japan's royal family at the Imperial Palace in Tokyo on January 2, 2023. PHILIP FONG/Pool via REUTERS 

Japan's Emperor Naruhito, Empress Masako, former Japanese emperor Akihito and former empress Michiko appear before well-wishers during the traditional New Year's greeting ceremony by Japan's royal family at the Imperial Palace in Tokyo on January 2, 2023. PHILIP FONG/Pool via REUTERS 

Former Japanese emperor Akihito, former empress Michiko, Japan's Emperor Naruhito, Empress Masako, their daughter Princess Aiko, Crown Prince Akishino, Crown Princess Kiko and their daughter Princess Kako appear before well-wishers during the traditional New Year's greeting ceremony by Japan's royal family at the Imperial Palace in Tokyo on January 2, 2023. PHILIP FONG/Pool via REUTERS 

Japanese Princess Aiko, daughter of Emperor Naruhito chats with Crown Prince Akishino and Crown Princess Kiko as they attend the New Year's greetings at the Imperial Palace in Tokyo on January 2, 2023, the first time in three years. YOSHIKAZU TSUNO/Pool via REUTERS 

Japan's Emperor Naruhito waves to well-wishers from a bullet-proof balcony during a public appearance at the Imperial Palace in Tokyo, Monday,Jan. 2, 2023. Shuji Kajiyama/Pool via REUTERS 

Well-wishers wave Japan's national flags as Japanese Emperor Naruhito, Empress Masako, his daughter Princess Aiko as the Imperial family members attend the New Year's greetings at the Imperial Palace in Tokyo on January 2, 2023, the first time in three years. YOSHIKAZU TSUNO/Pool via REUTERS 

Japan's Emperor Naruhito waves with Empress Masako to well-wishers from the bullet-proofed balcony during a public appearance with his imperial families at Imperial Palace in Tokyo Monday,Jan. 2, 2023. Shuji Kajiyama/Pool via REUTERS 

Japan's Emperor Naruhito, Empress Masako and their daughter Princess Aiko, attend a public appearance at Imperial Palace in Tokyo Monday, Jan. 2 2023. Shuji Kajiyama/Pool via REUTERS 

Japan's Emperor Naruhito with Empress Masako and Emperor Emeritus Akihito waves to well-wishers from the bullet-proofed balcony during a public appearance with his imperial families at Imperial Palace in Tokyo Monday, Jan. 2, 2023. Shuji Kajiyama/Pool via REUTERS 

Japan's Emperor Naruhito with Empress Masako and Princess Aiko wave to well-wishers from the bullet-proofed balcony during a public appearance with his imperial families at Imperial Palace in Tokyo Monday, Jan. 2 2023. Shuji Kajiyama/Pool via REUTERS 

Well-wishers wave Japanese national flags during the appearance of Emperor Naruhito and his royal family members for New Year celebrations at the Imperial Palace in Tokyo, Japan, January 2, 2023. REUTERS/Kim Kyung-Hoon/Pool 

TOKYO, JAPAN - JANUARY 02: (L-R) Princess Tsuguko of Takamado, Princess Hisako of Takamado, Princess Hanako of Hitachi, Prince Hitachi, Emperor Emeritus Akihito, Empress Emerita Michiko, Emperor Naruhito, Empress Masako, Princess Aiko, Crown Prince Fumihito of Akishino, Crown Princess Kiko of Akishino, Princess Kako of Akishino, Princess Yuriko of Mikasa, Princess Nobuko of Mikasa and Princess Akiko of Mikasa during the New Year's appearance by the Japanese royal family at the Imperial Palace on January 2, 2023 in Tokyo, Japan. The event was held for the first time in three years, following a hiatus due to the coronavirus pandemic. Tomohiro Ohsumi/Pool via REUTERS 

Japan's Emperor Naruhito, left, delivers a speech, with Empress Masako to well-wishers from the bullet-proofed balcony during a public appearance with his imperial families at Imperial Palace in Tokyo, Monday, Jan. 2, 2023. Shuji Kajiyama/Pool via REUTERS 

Japan's Emperor Naruhito waves with his imperial families to well-wishers from the bullet-proofed balcony during a public appearance with his imperial families at Imperial Palace in Tokyo, Monday, Jan. 2, 2023. Shuji Kajiyama/Pool via REUTERS 

Japanese Emperor Naruhito accompanied by Empress Masako and his daughter Princess Aiko waves to well wishers for the New Year's greetings at the Imperial Palace in Tokyo on January 2, 2023, the first time in three years. YOSHIKAZU TSUNO/Pool via REUTERS 

Japanese Emperor Naruhito accompanied by Empress Masako and his daughter Princess Aiko waves to well wishers for the New Year's greetings at the Imperial Palace in Tokyo on January 2, 2023, the first time in three years. YOSHIKAZU TSUNO/Pool via REUTERS 

Japan's Emperor Naruhito, Empress Masako, and their daughter Princess Aiko attend a public appearance for New Year celebrations at the Imperial Palace in Tokyo, Japan, January 2, 2023. REUTERS/Kim Kyung-Hoon/Pool 

Japan's Emperor Naruhito’s daughter Princess Aiko attends a public appearance for New Year celebrations at the Imperial Palace in Tokyo, Japan, January 2, 2023. REUTERS/Kim Kyung-Hoon/Pool 

TOKYO, JAPAN - JANUARY 02: Japan's Emperor Naruhito, and Empress Masako wave during the New Year's appearance by the Japanese royal family at the Imperial Palace on January 2, 2023 in Tokyo, Japan. The event was held for the first time in three years, following a hiatus due to the coronavirus pandemic. Tomohiro Ohsumi/Pool via REUTERS 

TOKYO, JAPAN - JANUARY 02: Japan's Emperor Naruhito, Empress Masako and Princess Aiko wave during the New Year's appearance by the Japanese royal family at the Imperial Palace on January 2, 2023 in Tokyo, Japan. The event was held for the first time in three years, following a hiatus due to the coronavirus pandemic. Tomohiro Ohsumi/Pool via REUTERS 

Japan's Emperor Emeritus Akihito, Empress Emerita Michiko, Emperor Naruhito, Empress Masako, Princess Aiko (from 3rd to 7th in L) and their royal families attend a public appearance for New Year celebrations at the Imperial Palace in Tokyo, Japan, January 2, 2023. REUTERS/Kim Kyung-Hoon/Pool 

Well-wishers wave Japanese national flags during the appearance of Emperor Naruhito and his royal family members for New Year celebrations at the Imperial Palace in Tokyo, Japan, January 2, 2023. REUTERS/Kim Kyung-Hoon/Pool 

Japan's Emperor Naruhito and Empress Masako wave to well-wishers through a bullet-proof glass from a balcony during their New Year's public appearance at the Imperial Palace in central Tokyo, Japan, 02 January 2023. It was Emperor Naruhito's first New Year's greetings to the public since 2020. FRANCK ROBICHON/Pool via REUTERS 

Japan's Emperor Naruhito (L) and Empress Masako (R) wave to well-wishers through a bullet-proof glass from a balcony during their New Year's public appearance at the Imperial Palace in central Tokyo, Japan, 02 January 2023. It was Emperor Naruhito's first New Year's greetings to the public since 2020. FRANCK ROBICHON/Pool via REUTERS 

Japan's Emperor Naruhito (L) and Empress Masako (R) wave to well-wishers through a bullet-proof glass from a balcony during their New Year's public appearance at the Imperial Palace in central Tokyo, Japan, 02 January 2023. It was Emperor Naruhito's first New Year's greetings to the public since 2020. FRANCK ROBICHON/Pool via REUTERS 

Japan's Emperor Naruhito delivers an address to well-wishers through a bullet-proof glass from a balcony during their New Year's public appearance at the Imperial Palace in central Tokyo, Japan, 02 January 2023. It was Emperor Naruhito's first New Year's greetings to the public since 2020. FRANCK ROBICHON/Pool via REUTERS 

Japan's Emperor emeritus Akihito and Empress emerita Michiko greet well-wishers through a bullet-proof glass from a balcony during their New Year's public appearance at the Imperial Palace in central Tokyo, Japan, 02 January 2023. It was Emperor Naruhito's first New Year's greetings to the public since 2020. FRANCK ROBICHON/Pool via REUTERS 

Japan's Emperor emeritus Akihito and Empress emerita Michiko greet well-wishers through a bullet-proof glass from a balcony during their New Year's public appearance at the Imperial Palace in central Tokyo, Japan, 02 January 2023. It was Emperor Naruhito's first New Year's greetings to the public since 2020. FRANCK ROBICHON/Pool via REUTERS 

Japan's Emperor Naruhito and Empress Masako greet well-wishers during the traditional New Year's greeting ceremony by Japan's royal family at the Imperial Palace in Tokyo on January 2, 2023. Philip Fong/Pool via REUTERS 

Japan's Emperor Naruhito gives a speech as Empress Masako and their daughter Princess Aiko listen during the traditional New Year's greeting ceremony by Japan's royal family at the Imperial Palace in Tokyo on January 2, 2023. PHILIP FONG/Pool via REUTERS 

Guards stand at attention as people wait for the start of the traditional New Year's greeting ceremony by Japan's royal family at the Imperial Palace in Tokyo on January 2, 2023. Philip Fong/Pool via REUTERS 

People arrive to attend the traditional New Year's greeting ceremony by Japan's royal family at the Imperial Palace in Tokyo on January 2, 2023. Philip Fong/Pool via REUTERS 

Japan's Emperor Naruhito and Empress Masako greet well-wishers during the traditional New Year's greeting ceremony by Japan's royal family at the Imperial Palace in Tokyo on January 2, 2023. PHILIP FONG/Pool via REUTERS 

Japan's Emperor Naruhito and Empress Masako greet well-wishers during the traditional New Year's greeting ceremony by Japan's royal family at the Imperial Palace in Tokyo on January 2, 2023. PHILIP FONG/Pool via REUTERS 

People arrive to attend the traditional New Year's greeting ceremony by Japan's royal family at the Imperial Palace in Tokyo on January 2, 2023. Philip Fong/Pool via REUTERS 

Uruguay's President Luis Lacalle Pou walks with Japan's Emperor Naruhito at the Imperial Palace during his visit to Tokyo, Japan, October 28, 2022. Kazuhiro Nogi/Pool via REUTERS 

Uruguay's President Luis Lacalle Pou walks with Japan's Emperor Naruhito at the Imperial Palace during his visit to Tokyo, Japan, October 28, 2022. Kazuhiro Nogi/Pool via REUTERS 

Uruguay's President Luis Lacalle Pou is welcomed by Japan's Emperor Naruhito at the Imperial Palace during his visit to Tokyo, Japan, October 28, 2022. Kazuhiro Nogi/Pool via REUTERS 

Uruguay's President Luis Lacalle Pou is welcomed by Japan's Emperor Naruhito at the Imperial Palace during his visit to Tokyo, Japan, October 28, 2022. Kazuhiro Nogi/Pool via REUTERS