GBP/JPY is trading around 172.40 at the time of writing with the price moving up from a low of 171.68 to a high of 172.45 so far. GBPJPY is testing the top of the box, as illustrated below. There are prospects of a breakout of the zone, one way or the other, with the upside bias currently in play.
A break of 172.80 opens the risk of an upside continuation:
However, the upside could be limited to the counter-trendline resistance. On the other hand, a break of here would open risk to 175.00.