http://crghlabr45r5pqkgnbgehywk5nxutdks5iss7tabyux5psikqqjirryd.onion/japan/13.html
To host, hosting player forwards a port (detailed instructions are available on the internet) and provides IP with a port in an IP:Port format, launches the game with sokuroll and uses the Vs Network menu to start the server. Client connects to provided IP and port and plays game.
Should a port be unable to be forwarded, workarounds exist - Autopunch being the best ( https://github.com/delthas/autopunch/blob/master/README.md , launch after sokuroll, both players must run this to work, so...