Immigration announced that the certificate of eligibility duration extend from 3 months to 6 months.
So don’t hesitate to submit the application of certificate of eligibility to Immigration now.
This procedure starts for the applicants who difficult to entry into Japan by CORONA VIRUS issue.
If you or your relations already got the certificate of eligibility from the Japanese Immigration, but submit the certificate of eligibility to Japanese Embassy / Consulate over 3 months, please attach another document of activity, issued by the company etc.
Refer to attached notice from Immigration Agency, written by PLAIN JAPANESE やさしいにほんご。