USDJPY on the H1timeframe chart at 2017.06.16 21:00 is now signaling: that the fast average has crossed medium average – a first sign that momentum might be changing from down to up, a reversal candle (up) (a potential long) with these signals firing off at the same time. Always check where this move is coming from, and where it might be going to. Consider buying. Remember it is worth waiting for a retrace of 40%, 50% or 60% of the signal candle to get a better entry, with stop placed below the low of the signal candle.
The chart is attached.