From Oct 20 to Oct 31 the Central Bank of Japan increased their balance sheet and the base money supply by 2.6%. The last day of this period was their big announcement that they would be making 80 trillion yen per year. I wonder if the current 10 day period will be even higher, since all of these days will be after the big announcement. Will be very interesting to see the next report.
I don't expect the demand for Yen is going up as fast as the supply. In fact, with all this printing I would expect the demand to go down.