Japan's outgoing Prime Minister Shinzo Abe holds a bouquet of flowers and waves as staff members of the official prime minister's residence applaud, as Abe leaves the residence, in Tokyo, Japan September 16, 2020.

Japan's Prime Minister Shinzo Abe, Chief Cabinet Secretary Yoshihide Suga, former Defense Minister Shigeru Ishiba and former Foreign Minister Fumio Kishida celebrate after Suga was elected as new head of the ruling party at the Liberal Democratic Party's (LDP) leadership election in Tokyo, Japan September 14, 2020. Eugene Hoshiko/Pool via REUTERS

Japan's outgoing Prime Minister Shinzo Abe holds a bouquet of flowers presented by staff members of the official prime minister's residence, as he leaves the premises, in Tokyo, Japan September 16, 2020.

Japan's newly-elected Prime Minister Yoshihide Suga arrives at his official residence in Tokyo, Japan September 16, 2020.

Newly appointed Japanese Prime Minister Yoshihide Suga with Finance Minister Taro Aso (R) and Foreign Minister Toshimitsu Motegi (L) smile as they prepare for a photo session with other cabinet members at the prime minister's official residence in Tokyo, Japan September 16, 2020. Yoshikazu Tsuno/Pool via REUTERS

Japan?s Chief Cabinet Secretary Yoshihide Suga is welcomed by officials, following the departure of outgoing Prime Minister Shinzo Abe (not pictured), at the official prime minister's residence in Tokyo, Japan September 16, 2020.

Japan's Chief Cabinet Secretary Yoshihide Suga presents Prime Minister Shinzo Abe with flowers after Suga was elected as new head of the ruling party at the Liberal Democratic Party's (LDP) leadership election in Tokyo, Japan September 14, 2020. Eugene Hoshiko/Pool via REUTERS

Japan's outgoing Prime Minister Shinzo Abe is presented a bouquet of flowers from staff members of the official prime minister's residence, as he leaves the premises, in Tokyo, Japan September 16, 2020.

Japan's newly-elected Prime Minister Yoshihide Suga arrives at his official residence in Tokyo, Japan September 16, 2020.

Masashi Yuri, a classmate of Japan's Chief Cabinet Secretary Yoshihide Suga, holds up a photo of Suga (L) taken when he was around fifteen years old, from a collection of photos at Yuri's home in Yuzawa, Akita Prefecture, Japan September 11, 2020.

Masashi Yuri, a classmate of Japan's Chief Cabinet Secretary Yoshihide Suga, points at a photo of Suga as a young child, from a collection of photos at Yuri's home in Yuzawa, Akita Prefecture, Japan, September 11, 2020.

Masashi Yuri, a classmate of Japan's Chief Cabinet Secretary Yoshihide Suga, shows a photo of Suga (back row, R), taken when he was around fourteen years old, from a collection of photos at Yuri's home in Yuzawa, Akita Prefecture, Japan, September 11, 2020. Picture taken September 11, 2020.

Japan's Chief Cabinet Secretary Yoshihide Suga enters prime minister?s official residence in Tokyo, Japan September 16, 2020.

Japan's Chief Cabinet Secretary Yoshihide Suga enters prime ministers official residence in Tokyo, Japan September 16, 2020.

Japan's outgoing Prime Minister Shinzo Abe holds a bouquet of flowers as staff members of the official prime minister's residence applaud, as Abe leaves the residence, in Tokyo, Japan September 16, 2020.

Japan's outgoing Prime Minister Shinzo Abe bows deeply as he leaves the official prime minister's residence in Tokyo, Japan September 16, 2020.

Law makers bow to Japan's Chief Cabinet Secretary Yoshihide Suga at the Lower House of the Parliament in Tokyo, Japan September 16, 2020.

Japan's outgoing Prime Minister Shinzo Abe arrives at the Lower House of the Parliament in Tokyo, Japan September 16, 2020.

Japan's newly-elected Prime Minister Yoshihide Suga stands as he was chosen as new prime minister at the Lower House of Parliament in Tokyo, Japan September 16, 2020.

Japan's newly-elected Prime Minister Yoshihide Suga bows as he was chosen as the new prime minister at the Lower House of the Parliament in Tokyo, Japan September 16, 2020.

Yoshihide Suga speaks during a news conference following his confirmation as Prime Minister of Japan in Tokyo, Japan September 16, 2020. Carl Court/Pool via REUTERS

Newly appointed Japanese Prime Minister Yoshihide Suga poses with his cabinet members at the prime minister's official residence in Tokyo, Japan September 16, 2020. Yoshikazu Tsuno/Pool via REUTERS

Japan's Emperor Naruhito stands before new Prime Minister Yoshihide Suga, as former prime minister Shinzo Abe looks on, during Suga's attestation ceremony at the Imperial Palace in Tokyo, Japan September 16, 2020, in this handout photo provided by the Imperial Household Agency of Japan. Mandatory credit The Imperial Household Agency of Japan/Handout via REUTERS

Japans Chief Cabinet Secretary Yoshihide Suga bows as he is welcomed by officials, following the departure of outgoing Prime Minister Shinzo Abe (not pictured), at the official prime minister's residence in Tokyo, Japan September 16, 2020.

Japan's outgoing Prime Minister Shinzo Abe wave to staff members as they applaud to bid him goodbye at his official residence in Tokyo, Japan September 16, 2020.

A photo of Japan's Chief Cabinet Secretary Yoshihide Suga (C) dressed as a policeman in a school play, taken when he was around fourteen years old, from a collection of photos at the home of classmate Masashi Yuri in Yuzawa, Akita Prefecture, Japan September 11, 2020. Picture taken September 11, 2020.

Japan's newly-elected Prime Minister Yoshihide Suga bows as he was chosen as the new prime minister at the Lower House of the Parliament in Tokyo, Japan September 16, 2020.