The Japanese government already has barred the immigration of the vast majority of new immigrants. This travel ban will be in effect until December 31, 2021. You may wish to go to the official website of the Japanese government for further information. It’s accessible in two languages: English and Japanese.

The Japanese government is now banning travel from certain nations and areas. People from other countries, particularly foreign tourists, students, and businesses, have been impacted by the travel restriction. All travelers (both Japanese and non-Japanese) must display negative COVID test results while entering and leaving Japan. They are also prohibited from using public transportation for the first 14 days following their arrival in Japan. The ANA website has further information regarding Japan’s travel ban. (ANA is a well-known Japanese carrier.) This website, in my opinion, is reputable and up to date with information. The links below will take you to the site.

English-language version:

https://www.ana.co.jp/en/jp/topics/coronavirus-travel-information/immigratio

Japanese-language version:

https://www.ana.co.jp/ja/jp/topics/coronavirus-travel-information/immigratn/