Above is a 1 minute chart of Yen Futures.the BOJ,after monthly meeting tweaked  Her QE program,it did not expand it.Markets initially interpreted it as an Increase IN  amount of QE   per month,yen sold off hard.Once markets realized it wasn’t an Increase in yen spent per month it did a quick about face and rallied hard. Initial move lower 140 ticks,subsequent move higher 160 ticks.From lows to high close to  260 ticks,Pain felt somewhere.

Risk markets don’t like a higher a yen and this strength has been one of the reason for Lower Stocks world wide