Set up OpenVPN on Windows
Run "File Explorer", and •••, Options
On View tab, Uncheck "Hide extensions for known file types", and Apply
Download the config file
Click the link below, and save the "kuins.ovpn" file
Change your Client certificate filename
"NIIcertXXXXXXXX-XXXXXX.p12" ⇨ "kuins.p12"
Put "kuins.ovpn" and "kuins.p12" file on Windows(C:)> Users > [Username] > OpenVPN > config