I think you should not worry and just go for it!

The worst case for you is probably :
a) you have to camp if you want good seats because japanese fans would definitely camp if there were no assigned seats
b) you would get so-so seats if you don't feel like camping. But it won't be so bad I guess?
Either way, it is far better than trying to get a ticket for Japan's events. And during oly season I am guessing NHK, GPF and Nats and Oly in korea would mean all the japanese fans would even be more determined to go due to less travel time and cost (and the possibility of yuzuru retiring). I also heard rumors that olympic tickets would be limited to international audience (like only 30%). I don't even want to imagine the price after auction for those tickets