There are several places on this site where we use Japanese characters.
They might not show up properly; if this is the case, Windows 8.1, 10, and 10.1
probably solve the problem by installing the Japanese language support:
Start -> Settings -> Control Panel
select 'Add a Language'
From the list of supported languages, click 'Japanese'
close window. exit Control Panel
you may then need to restart your computer.
The details may vary from version to version of Windows, so take the above
as a general approach and modify it for your system if necessary.