The International Olympic Committee (IOC) recommends that athletes and staff get vaccinated against COVID-19. Before traveling to the Olympic Games in Tokyo. Japan Emphasizing the need to protect the health and safety of the people of Japan.
During a conference youtube call with the National Olympic Committee, IOC President Thomas Bach reiterated that vaccination was part of the IOC's tool for COVID-19 and organizers of both the Tokyo Olympics 2020. And the Beijing 2022 Winter Sports

Japan has yet to change the schedule for the Olympic Games between 23 July - 8 August 2021 and the Paralympic Games schedule between 24 August - 5 September 2021.