At the beginning of April, Japan's ex-FX diplomat Watanabe said that the BOJ were unlikely to intervene with USD/JPY below 155. Well now the pair trade less than 80 pips beneath this key level (and less than a day's trade by recent standards), 155 is certainly the level to watch today.
The strength of the bullish 1-hour trend makes it seem that USD/JPY has little choice by to at least try and retest 155. Prices are now consolidating after a mild pullback, RSI (2) is nearing oversold during an uptrend and the daily pivot point is nearby for dip buyers to consider longs.
Should momentum turn higher from here, bulls could simply target 155.
As for how it behaves if it meets that level remains to be seen. Yet prior attempts at key levels usually sees momentum either slow down ahead of it, or a volatile breakout is followed by a shakeout before prices revert beneath the key level. The only exception in recent history was IS CPI data which saw prices smash through 152 with apparent ease.
But today we suspect market forces alone can drive prices higher without US data. The question remains as to whether the BOJ will remain quiet and allow the rally to flourish further.