USD/JPY dropped sharply last week after failing to break through 137.90 resistance. But as a temporary low was formed at 133.48, initial bias is neutral this week first. Fall from 137.76 is seen as the third leg of the pattern from 137.90. Below 133.48 will target 133.00 first, break will target 129.62 support. Still, as long as 129.62 holds, larger rebound from 127.20 is still in favor to resume at a later stage. On the upside, above 135.68 minor resistance will turn bias back to the upside for 137.76/90 instead.
In the bigger picture, price actions from 151.93 high are currently seen as a corrective pattern to the long term up trend. The first leg should have completed at 127.20. Rebound from there is seen as the second leg. Sustained break of 38.2% retracement of 151.93 to 127.20 at 136.34 will bring stronger rebound to 61.8% retracement at 142.48. Meanwhile, break of 129.62 will argue that the third leg is starting through 127.20 low.
In the long term picture, price action from 151.93 is seen as developing into a corrective pattern to up trend from 75.56 (2011 low). While deeper decline cannot be ruled out, downside should be contained by 38.2% retracement of 75.56 to 151.93 at 122.75.