Originally Posted by
CPH-Flyer
I can only recommend to sure make to that the medical institution is willing to fill in and sign the form that the government of Japan has published for PCR results. If not, don't just trust, ask for an advance example of the form and check that it lives up the requirements.
Don't automatically trust anything that happens in Hawaii!
His host brother visited Japan a month ago and is now back in Hawaii, so as long as he follows that example, I think it will go smoothly. Of course, you never know when an unexpected change/rule will get introduced.