Just be aware that the JR pass is meant to be a form of soft power expression, with the goal being to make it easy for tourists to get places to spend money and then make them want to share stories about how great the rail system is in Japan when they leave.
They don’t allow such good deals for their own residents, only tourists, since JR pass requires you to be a non-resident. For everyone else, it is far more expensive to travel moderate distances by rail than it even is to fly in most circumstances in Japan.