Loyalty Lobby had an interesting article yesterday about travelling to Japan in 2021.
When the World Cup was held in Russia in 2018, ticket holders were allowed to travel to the country (during the tournament and for the rest of 2018) without a visa.
With coronavirus still likely to be an issue in July and August, it is possible than Japan will continue to ban foreign tourism except for people holding tickets for olympic and paralympic events.
The official UK seller of olympic tickets is only offering flight, hotel and ticket packages. However, UK residents can purchase stand-alone paralympic tickets – from just £11 – via Nirvana. Nirvana is the official authorised paralympic ticket seller for the UK.
There is no guarantee that buying an £11 paralympic ticket will let you magically walk into Japan when all other tourists are banned but it is a low cost gamble. Flights and hotels should also be easier to find during the paralympics (24th August to 5th September) than during the main games (23rd July to 8th August).