GBP/JPY’s decline last week argues that rebound from 149.16 has completed at 152.82 already. Break of 150.80 this week will bring deeper fall to retest 148.43/149.16 key support zone. On the upside, above 152.82 will resume the rebound to 153.42 resistance instead.
In the bigger picture, rise from 123.94 is seen as the third leg of the pattern from 122.75 (2016 low). As long as 149.03 support holds, such rise would still resume at a later stage. However, sustained break of 149.03 support will indicate rejection by 156.59. Fall from 156.05 would be at least correcting the whole rise from 123.94. Deeper fall would be seen back 38.2% retracement of 123.94 to 156.05 at 143.78 first.
In the longer term picture, the strong break of 55 months EMA was an early sign of long term bullish reversal. Firm break of 156.69 resistance should now confirm the start of an up trend for 195.86 (2015 high). However, rejection by 156.69 will invalidate the bullish signal and keep long term outlook neutral first.