The current bias of the USD/JPY is undefined. Sidewards, consolidation for the previous week since the big move last Wednesday. The pair is currently in two channels; short term sidewards, defined by the black dashed line and longer term bearish channel (light blue). At the end of trading today, one of the two channels should be hit and act as a resistance.
Place your short orders when one of the two channels is touched, but obviously wait for confirmation.
The channel was broken; now the same channel is acting as support. I bought long where the X is placed. The next important price action is the black dashed line were that is the last 2 week channel.