Bus Transport for Central Area

Would like to find out the bus companies providing bus services (direct or transit at various towns) for,

1. Fujikawaguchi Station to Nagiso
2. Nagiso to Takayama
3. Nagiso to Shirakawa-go
4. Takayama to Shirakawa-go
5. Takayama to Matsumoto
6. Matsumoto to Tokyo

Really appreciate your answer, thanks.

Hi!

For 4. Takayama to Shirakawa Go you will be using Nohi Bus
https://www.nouhibus.co.jp/route_bus/takayama-shirakawago-line-en/

For 5 Takayama to Matsumoto again you will use Nohi,
https://www.nouhibus.co.jp/highwaybus/matsumoto_en/

For 6. Matsumoto to Tokyo you will want Alpico
https://www.alpico.co.jp/en/timetable/matsumoto/

(they also do the buses from Matsumoto to Takayama)

Good luck finding information on the other routes!

And assuming you are trying to get to Nagiso to do the Nakasendo trail between Magome and Tsumago, Nohi also has a bus going from Takayama directly to Magome and Tsumago (but not Nagiso.)
https://www.nouhibus.co.jp/route_bus/magome_tsumago_line_en/