USD/JPY is underpinned this morning on several fronts. The dollar is somewhat firmer across the board (save for the pound) while the JPY is being sold against the surging pound as well. GBP/JPY broke through the important 150 level and has rallied as high as 151.10 thus far.
In USD/JPY, order books look something like this: Exporters have sell orders at 91.20/30. Large stops are clustered above the 91.50 level, though smaller stops (the low hanging fruit) are seen in the 91.35 area.