1. The head of BOJ said that they will short their currency between 90 - 95 per dollar. They are currently doing it.
2. The head of the BOJ don't want to change their (Negative Interest Rate). That means it will put a cap on USD/JPY at 112 area.
3. Fiscal Policy (Money Printing) will only weakens the Yen. ( Post Earthquake stimulus, etc)
Thus, YEN is in a Trading Range for a long time to come.
Go Long at between 105- 108. The Bank Of Japan will crush any strength on Yen. Go Short at 112 area.