Upvote:3
For the purposes of this answer I am assuming that you are:
In such cases, a transit visa or any other documentation was not required to transit Japan. This still holds true during the pandemic: as long as you are not entering Japan (i.e. passing immigration), the Japanese government imposes no restrictions.
In the words of Japan Air Lines from their website (select guests entering Japan and then scroll down):
Travelers who are not entering Japan and transferring directly to a third country by transit, are not required to submit any documents and undergo PCR tests.
However, the following cases require entry into Japan. Please be informed that foreign nationals arriving from prohibited countries will not be allowed to enter Japan.
- Transferring between Tokyo International Airport (Haneda Airport) and Narita International Airport
- Travelers with a connecting flight out of Narita International Airport the following day
So this itinerary is possible.