The GBP/JPY is in a similar position as the GBP/USD in that the daily trend is down and the market has rallied off of the lows.
This is a classic selling opportunity but these markets are taking their time to resume the move down. At this point, if you are not open to taking a small loss or two in attempting to get a good sell entry, the play would be to sell on a move down through support. Your risk may be higher, but waiting for confirmation of a trending move can lead to a higher win percentage. It is really a matter of personal preference.