The Olympics and Paralympics could be held in front of "a limited number of spectators" due to Covid-19, says Tokyo 2020 chief executive Toshiro Muto.
Muto told BBC Sport organisers “will do everything we can to make it to the opening ceremony” on 23 July, 2021.
The International Olympic Committee does not want to put the Games back a further year until 2022.
“Everyone should focus on holding the event next year - we’re on the same page,” said Muto.
“We discussed this with Mr [Thomas] Bach [IOC president] and he’s saying it isn't appropriate to think about cancelling or postponing again."
The Games have already been postponed for a year due to Covid-19 and with more than 660,000 people having died globally during the pandemic, Muto admits they may have to stage events without capacity crowds.
Asked about the possibility of the Olympics being held with no spectators, Muto replied: “Mr Bach is not looking for that scenario.
“He may be thinking about a limited number of spectators with full consideration of social distancing.”