With TOR, you can specify the country of exit nodes to test a particular website from a specific country.
Just add these 4 lines in the torrc file.
ExitNodes {jp}
StrictNodes 1
GeoIPExcludeUnknown 1
AllowSingleHopCircuits 0
Configuration location for TorBrowser: ~/Library/Application Support/TorBrowser-Data/Tor/torrc
Configuration location for Tor /usr/local/etc/torrc