> What is the Japanese government agency that provides reports about the number of foreign nations who die on Japanese soil, and where is the report from the time period including late June 2021, showing that nobody died. And for comparison, where can I read a sample report from a time period in which the number of deaths exceeded zero?

I found this site, it’s operated by the US government rather than the Japanese government. If you look for US citizens who died in Japan in June 2021, it does in fact show that there were no deaths.

https://travel.state.gov/content/travel/en/international-tra...

Note that the site only has statistics up to June 2021 and is only updated every 6 months. I thought that maybe the statistics were only updated up to the beginning of June but I tried another country (Mexico) and there was a death listed on June 28 so it seems like they’re up to the end of June.