• USD/JPY has seen a 163.67-85 range, so far on Tuesday, according to EBS data

• Spot bullish while above 163.16 Fibo, a 23.6% retrace of the 160.49-163.99 July (EBS) rise

• But it continues to trade below last week's new 163.99 multi-decade high

• There are likely good offers ahead of 164.00, some probably option barrier defence

• If large stops above 164.00 are triggered, that would unmask massive barriers at 165.00

• Japan's Katayama touts 'smooth' government relations with BOJ

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(Martin Miller is a Reuters market analyst. The views expressed are his own)