Saxo Bank is always good at putting together lists of outrageous predictions. In the 2014 edition, they look at deflation, increasing QE and USD/JPY falling to 80.
As the global recovery runs out of steam investors are forced back into the yen, sending USD/JPY below 80 from just under 103 yen currently. In desperation, the Bank of Japan deletes its government-debt securities in efforts to escape the inflation trap, which would mean about 15% of government debt would disappear. Saxo Bank calls it a simple “accounting trick that effectively equates to ‘now you see it, now you don’t.’”