It is hard to make predictions, basicaly i anticipate EUR/USD (the only one i trade) a little higher, so for corelation reasons perhaps USD/JPY a little lower, and i do know corelation has not been the best the last few months, , BUT , i trade down to the lowest TF's so always prepared to change direction, and my mind, very quickly. This post is not ment in any way to affect your original trade idea.
I see where you're coming from. The EURUSD definitely looks like its going to continue its uptrend, and b/c of the inverse relationship, USDJPY should be going down. We'll get our answer during the London hours