Not surprising to me that Japan has reopened things. I tried to compare the cases and deaths per capita in the two countries and Japan wasn't even on the same scale because the total is almost two orders of magnitude less in cases and deaths than in the US. If the US was in the same place Japan is I'd be pretty comfortable opening schools too.
Yeah, it's definitely not the same situation.
Like I said, I don't know how it is in the US, but I don't know a single person here's that's even been affected by the virus itself. There are a lot of precautions and what not, but in terms of the virus itself it still feels like something that's only a problem far away.