Japan's Olympic fencing medallist Ryo Miyake cycles as he works his part-time job as Uber Eats delivery person under a nationwide state of emergency as the spread of the coronavirus disease (COVID-19) continues in Tokyo, Japan May 12, 2020. Picture taken May 12, 2020. REUTERS/Issei Kato

Japan's Olympic fencing medallist Ryo Miyake bears his bicycle as he works his part-time job as Uber Eats delivery person under a nationwide state of emergency as the spread of the coronavirus disease (COVID-19) continues in Tokyo, Japan May 12, 2020. Picture taken May 12, 2020. REUTERS/Issei Kato

Japan's Olympic fencing medallist Ryo Miyake cycles as he works his part-time job as Uber Eats delivery person under a nationwide state of emergency as the spread of the coronavirus disease (COVID-19) continues in Tokyo, Japan May 12, 2020. Picture taken May 12, 2020. REUTERS/Issei Kato

Japan's Olympic fencing medallist Ryo Miyake cycles as he works his part-time job as Uber Eats delivery person under a nationwide state of emergency as the spread of the coronavirus disease (COVID-19) continues in Tokyo, Japan May 12, 2020. Picture taken May 12, 2020. REUTERS/Issei Kato

Japan's Olympic fencing medallist Ryo Miyake cycles as he works his part-time job as Uber Eats delivery person under a nationwide state of emergency as the spread of the coronavirus disease (COVID-19) continues in Tokyo, Japan May 12, 2020. Picture taken with a slow shutter speed. Picture taken May 12, 2020. REUTERS/Issei Kato

Japan's Olympic fencing medallist Ryo Miyake wearing a protective face mask works his part-time job as Uber Eats delivery person under a nationwide state of emergency as the spread of the coronavirus disease (COVID-19) continues in Tokyo, Japan May 12, 2020. Picture taken May 12, 2020. REUTERS/Issei Kato

Japan's Olympic fencing medallist Ryo Miyake collects a ramen noodle order from a restaurant as he works his part-time job as Uber Eats delivery person under a nationwide state of emergency as the spread of the coronavirus disease (COVID-19) continues in Tokyo, Japan May 12, 2020. Picture taken May 12, 2020. REUTERS/Issei Kato

Japan's Olympic fencing medallist Ryo Miyake trains at the rooftop of his apartment under a nationwide state of emergency as the spread of the coronavirus disease (COVID-19) continues in Tokyo, Japan May 12, 2020. Picture taken May 12, 2020. REUTERS/Issei Kato

Japan's Olympic fencing medallist Ryo Miyake trains at the rooftop of his apartment under a nationwide state of emergency as the spread of the coronavirus disease (COVID-19) continues in Tokyo, Japan May 12, 2020. REUTERS/Issei Kato TPX IMAGES OF THE DAY

Japan's Olympic fencing medallist Ryo Miyake works his part-time job as Uber Eats delivery person under a nationwide state of emergency as the spread of the coronavirus disease (COVID-19) continues in Tokyo, Japan May 12, 2020. Picture taken May 12, 2020. REUTERS/Issei Kato

Japan's Olympic fencing medallist Ryo Miyake cycles as he works his part-time job as Uber Eats delivery person under a nationwide state of emergency as the spread of the coronavirus disease (COVID-19) continues in Tokyo, Japan May 12, 2020. Picture taken with a slow shutter speed. Picture taken May 12, 2020. REUTERS/Issei Kato

Japan's Olympic fencing medallist Ryo Miyake holds his rapier as he trains at the rooftop of his apartment under a nationwide state of emergency as the spread of the coronavirus disease (COVID-19) continues in Tokyo, Japan May 12, 2020. Picture taken May 12, 2020. REUTERS/Issei Kato

Japan's Olympic fencing medallist Ryo Miyake trains at the rooftop of his apartment under a nationwide state of emergency as the spread of the coronavirus disease (COVID-19) continues in Tokyo, Japan May 12, 2020. Picture taken May 12, 2020. REUTERS/Issei Kato

Japan's Olympic fencing medallist Ryo Miyake trains at the rooftop of his apartment under a nationwide state of emergency as the spread of the coronavirus disease (COVID-19) continues in Tokyo, Japan May 12, 2020. Picture taken May 12, 2020. REUTERS/Issei Kato

Japan's Olympic fencing medallist Ryo Miyake works his part-time job as Uber Eats delivery person under a nationwide state of emergency as the spread of the coronavirus disease (COVID-19) continues in Tokyo, Japan May 12, 2020. Picture taken May 12, 2020. REUTERS/Issei Kato

A woman wearing a protective face mask, following an outbreak of the coronavirus disease (COVID-19), walks at an empty cloister at the Roppongi Hills complex in Tokyo, Japan April 1, 2020. REUTERS/Issei Kato

People wearing protective face masks, following an outbreak of the coronavirus disease (COVID-19), takes a rest next to almost empty seats of a cafe and restaurant at the Roppongi Hills complex in Tokyo, Japan April 1, 2020. REUTERS/Issei Kato

A man wearing a protective face mask, following an outbreak of the coronavirus disease (COVID-19), takes a rest next to empty seats of a cafe and restaurant at the Roppongi Hills complex in Tokyo, Japan April 1, 2020. REUTERS/Issei Kato

People wearing protective face masks, following an outbreak of the coronavirus disease (COVID-19), are seen at the Roppongi Hills complex in Tokyo, Japan April 1, 2020. REUTERS/Issei Kato

Passersby wearing protective face masks, due to an outbreak of the coronavirus disease (COVID-19), walk past next to a countdown clock showing the adjusted days and time for the start of the postponed Tokyo Paralympic Games in Tokyo April 1, 2020. REUTERS/Issei Kato

A passerby wearing a protective face mask, due to an outbreak of the coronavirus disease (COVID-19), walks past next to a countdown clock showing the adjusted days and time for the start of the postponed Tokyo Olympic Games which have been set to begin on July 23, 2021, in Tokyo April 1, 2020. REUTERS/Issei Kato

A passerby wearing a protective face mask due to an outbreak of the coronavirus disease (COVID-19), walks past next to a countdown clock showing the adjusted days and time for the start of the postponed Tokyo Paralympic Games in Tokyo April 1, 2020. REUTERS/Issei Kato

Passersby holding umbrellas walk past next to a countdown clock showing the adjusted days and time for the start of the postponed Tokyo Olympic Games which have been set to begin on July 23, 2021, following an outbreak of the coronavirus disease (COVID-19) in Tokyo April 1, 2020. REUTERS/Issei Kato

The Tokyo Organising Committee of the Olympic and Paralympic Games (Tokyo 2020) Executive Board member Haruyuki Takahashi, wearing a protective face mask following an outbreak of the coronavirus disease (COVID-19), is seen during Tokyo 2020 Executive Board Meeting in Tokyo, Japan March 30, 2020. REUTERS/Issei Kato/Pool

Toshiro Muto, Tokyo 2020 Organizing Committee Chief Executive Officer, attends a news conference after Tokyo 2020 Executive Board Meeting, during the outbreak of coronavirus disease (COVID-19), in Tokyo, Japan March 30, 2020. REUTERS/Issei Kato/Pool

Toshiro Muto, Tokyo 2020 Organizing Committee Chief Executive Officer, attends a news conference after Tokyo 2020 Executive Board Meeting, during the outbreak of coronavirus disease (COVID-19), in Tokyo, Japan March 30, 2020. REUTERS/Issei Kato/Pool

Toshiro Muto, Tokyo 2020 Organizing Committee Chief Executive Officer, attends a news conference after Tokyo 2020 Executive Board Meeting, during the outbreak of coronavirus disease (COVID-19), in Tokyo, Japan March 30, 2020. REUTERS/Issei Kato/Pool

Toshiro Muto, Tokyo 2020 Organizing Committee Chief Executive Officer, attends a news conference after Tokyo 2020 Executive Board Meeting, during the outbreak of coronavirus disease (COVID-19), in Tokyo, Japan March 30, 2020. REUTERS/Issei Kato/Pool

The Tokyo Organising Committee of the Olympic and Paralympic Games (Tokyo 2020) Executive Board member Haruyuki Takahashi, wearing a protective face mask following an outbreak of the coronavirus disease (COVID-19), is seen during Tokyo 2020 Executive Board Meeting in Tokyo, Japan March 30, 2020. REUTERS/Issei Kato/Pool

The Tokyo Organising Committee of the Olympic and Paralympic Games (Tokyo 2020) Executive Board member Haruyuki Takahashi puts on a protective face mask following an outbreak of the coronavirus disease (COVID-19), during Tokyo 2020 Executive Board Meeting in Tokyo, Japan March 30, 2020. REUTERS/Issei Kato/Pool

The Tokyo Organising Committee of the Olympic and Paralympic Games (Tokyo 2020) Executive Board member Haruyuki Takahashi arrives at Tokyo 2020 Executive Board Meeting in Tokyo, Japan March 30, 2020. REUTERS/Issei Kato/Pool

The Tokyo Organising Committee of the Olympic and Paralympic Games (Tokyo 2020) Executive Board member Haruyuki Takahashi arrives at Tokyo 2020 Executive Board Meeting in Tokyo, Japan March 30, 2020. REUTERS/Issei Kato/Pool

Yoshiro Mori, President of the Tokyo 2020 Olympic Games Organising Committee, talks with Honorary President Fujio Mitarai wearing a protective face mask following an outbreak of the coronavirus disease (COVID-19), upon his arrival at Tokyo 2020 Executive Board Meeting in Tokyo, Japan March 30, 2020. REUTERS/Issei Kato/Pool

Yoshiro Mori, President of the Tokyo 2020 Olympic Games Organising Committee, talks with Honorary President Fujio Mitarai wearing a protective face masks following an outbreak of the coronavirus disease (COVID-19), during Tokyo 2020 Executive Board Meeting in Tokyo, Japan March 30, 2020. REUTERS/Issei Kato/Pool

Yoshiro Mori, President of the Tokyo 2020 Olympic Games Organising Committee, drinks water during Tokyo 2020 Executive Board Meeting in the coronavirus disease (COVID-19) outbreak in Tokyo, Japan March 30, 2020. REUTERS/Issei Kato/Pool

Yoshiro Mori, President of the Tokyo 2020 Olympic Games Organising Committee, talks with CEO Toshiro Muto during Tokyo 2020 Executive Board Meeting in the coronavirus disease (COVID-19) outbreak in Tokyo, Japan March 30, 2020. REUTERS/Issei Kato/Pool

Yoshiro Mori, President of the Tokyo 2020 Olympic Games Organising Committee, delivers a speech during Tokyo 2020 Executive Board Meeting in the coronavirus disease (COVID-19) outbreak in Tokyo, Japan March 30, 2020. REUTERS/Issei Kato/Pool

Yoshiro Mori, President of the Tokyo 2020 Olympic Games Organising Committee, delivers a speech during Tokyo 2020 Executive Board Meeting in the coronavirus disease (COVID-19) outbreak in Tokyo, Japan March 30, 2020. REUTERS/Issei Kato/Pool

Yoshiro Mori, President of the Tokyo 2020 Olympic Games Organising Committee, delivers a speech during Tokyo 2020 Executive Board Meeting in the coronavirus disease (COVID-19) outbreak in Tokyo, Japan March 30, 2020. REUTERS/Issei Kato/Pool

Yoshiro Mori, President of the Tokyo 2020 Olympic Games Organising Committee, delivers a speech during Tokyo 2020 Executive Board Meeting in the coronavirus disease (COVID-19) outbreak in Tokyo, Japan March 30, 2020. REUTERS/Issei Kato/Pool

Yoshiro Mori, President of the Tokyo 2020 Olympic Games Organising Committee, talks with other board members wearing protective face masks, following an outbreak of the coronavirus disease (COVID-19), upon his arrival at Tokyo 2020 Executive Board Meeting in Tokyo, Japan March 30, 2020. REUTERS/Issei Kato/Pool

A passerby walks past the Tokyo International Exhibition Centre (Tokyo Big Sight), originally planned to be used as the International Broadcast Centre and Main Press Centre for the Tokyo 2020 Olympic Games, after the competition was postponed due to the outbreak of coronavirus disease (COVID 19), in Tokyo, Japan March 25, 2020. Picture taken March 25, 2020. REUTERS/Issei Kato

A passerby wearing a protective face mask walks past the Tokyo International Exhibition Centre (Tokyo Big Sight), originally planned to be used as the International Broadcast Centre and Main Press Centre for the Tokyo 2020 Olympic Games, after the competition was postponed due to the outbreak of coronavirus disease (COVID 19), in Tokyo, Japan March 25, 2020. Picture taken March 25, 2020. REUTERS/Issei Kato

A passerby wearing a protective face mask, following an outbreak of the coronavirus disease (COVID-19), walks past an electric screen displaying logos of Tokyo 2020 Olympic Games and Galaxy, a brand name of mobile computing devices by Samsung Electronics and worldwide smartphone partner for the Games, at Galaxy Harajuku in Tokyo, Japan March 26, 2020. Picture taken March 26, 2020. REUTERS/Issei Kato

'Closed' notices are displayed at the entrance of Galaxy Harajuku, a flagship store of the Galaxy brand mobile computing devices by Samsung Electronics, during the coronavirus disease (COVID-19) outbreak, in Tokyo, Japan March 26, 2020. Picture taken March 26, 2020. REUTERS/Issei Kato

'Closed' notices are displayed at the entrance of Galaxy Harajuku, a flagship store of the Galaxy brand mobile computing devices by Samsung Electronics, during the coronavirus disease (COVID-19) outbreak, in Tokyo, Japan March 26, 2020. Picture taken March 26, 2020. REUTERS/Issei Kato

A passerby wearing a protective face mask, following an outbreak of the coronavirus disease (COVID-19), walks past an electric screen displaying logos of Tokyo 2020 Olympic Games and Galaxy, a brand name of mobile computing devices by Samsung Electronics and worldwide smartphone partner for the Games, at Galaxy Harajuku in Tokyo, Japan March 26, 2020. Picture taken March 26, 2020. REUTERS/Issei Kato

A passerby wearing a protective face mask, following an outbreak of the coronavirus disease (COVID-19), walks in front of Galaxy Harajuku, a flagship store of the Galaxy, a brand name of mobile computing devices by Samsung Electronics in Tokyo, Japan March 26, 2020. Picture taken March 26, 2020. REUTERS/Issei Kato

A woman uses her smartphone as an electric screen displaying logos of Tokyo 2020 Olympic Games and Galaxy, a brand name of mobile computing devices by Samsung Electronics and worldwide smartphone partner for the Games, at Galaxy Harajuku in Tokyo, Japan March 26, 2020. Picture taken March 26, 2020. REUTERS/Issei Kato

Yoshiro Mori, President of the Tokyo 2020 Olympic Games Organising Committee, delivers a speech at a meeting of Tokyo 2020 Games planning task force during the coronavirus disease (COVID-19) outbreak in Tokyo, Japan March 26, 2020. REUTERS/Issei Kato

Yoshiro Mori, President of the Tokyo 2020 Olympic Games Organising Committee, delivers a speech at a meeting of Tokyo 2020 Games planning task force during the coronavirus disease (COVID-19) outbreak in Tokyo, Japan March 26, 2020. REUTERS/Issei Kato

Yoshiro Mori, President of the Tokyo 2020 Olympic Games Organising Committee, delivers a speech at a meeting of Tokyo 2020 Games planning task force during the coronavirus disease (COVID-19) outbreak in Tokyo, Japan March 26, 2020. REUTERS/Issei Kato

Yoshiro Mori, President of the Tokyo 2020 Olympic Games Organising Committee, takes off a protective face mask as he arrives for the first meeting of Tokyo 2020 Games planning task force during the coronavirus disease (COVID-19) outbreak, in Tokyo, Japan March 26, 2020. REUTERS/Issei Kato

A rickshaw driver takes a souvenir photo for his clients at Asakusa district amid coronavirus disease (COVID-19) concerns, in Tokyo, Japan March 25, 2020. REUTERS/Ju-min Park

Tourists wearing protective face masks following an outbreak of the coronavirus disease (COVID-19) are seen at Asakusa district in Tokyo, Japan March 25, 2020. REUTERS/Ju-min Park

A worker wears a jacket with the logo of Panasonic, Tokyo 2020 Olympic and Paralympic Games' partner, as he walks at an under-construction site of the Olympic villages, after postponing Games due to the outbreak of coronavirus disease (COVID-19), in Tokyo, Japan March 25, 2020. REUTERS/Issei Kato

A banner for the upcoming Tokyo 2020 Olympics is seen behind traffic lights, following an outbreak of the coronavirus disease (COVID-19), in Tokyo, Japan, March 23, 2020. REUTERS/Issei Kato

A man wearing a protective face mask, following an outbreak of the coronavirus disease (COVID-19), walks past the upcoming Tokyo 2020 Olympics decoration board in Tokyo, Japan, March 23, 2020. REUTERS/Issei Kato

Passerby wearing protective face masks, following an outbreak of the coronavirus disease (COVID-19), walk past the upcoming Tokyo 2020 Olympics decoration board in Tokyo, Japan, March 23, 2020. REUTERS/Issei Kato

Passerby wearing protective face masks, following an outbreak of the coronavirus disease (COVID-19), walk past the upcoming Tokyo 2020 Olympics decoration board in Tokyo, Japan, March 23, 2020. REUTERS/Issei Kato