The pair just broke the support at 87.21, heading to the 87.00 target. The strength of the dollar against the yen is just momentarily, which makes us think the pair will stay low for the next hours, if the BoJ doesn't make more comments about the yen strength.The bands of Bollinger show a volatility of 100 pips in the hour, while the 14 period RSI is clearly oversold.

The next resistance is at 87.35 yens per dollar. The Stochastic shows selling signs, right now.