Have you been to the Stalactite cave?
I have been here back to probably 2005(?), and I recalled we also visited a stalactite cave, but probably I am wrong, the stalactite cave may be located in Takayama city.
Yes, Japan has a very strong soft power in terms of cleanness and being well organised, everywhere and all the time. However, its government has been doing a lot of stupid things to deteriorate their soft powers.
Anyway, happy new year.