There is an absolutely unbelievably cool thing you can do in Kochi. Be a blacksmith for a day! Join Japanese blacksmith masters and forge your own blade. In these two very cool Youtube videos you can see how some foreign visitors could get into the blacksmithing world of Kochi and make knives.
Check this one out:
To have your own knife making forging experience follow the link below:
You can speak English with the blacksmith master and he will guide you through the process. This is precisely the kind of thing you can only do on a “Deep Japan” adventure. Inquire within!