USDJPY M1
USD/JPY 1-minute chart

I had a whole post lined up about how Tokyo had every reason to step in but they didn't earlier. So far, the drop is still seeing a couple of volatile pushes up and down when you drill down to the minute chart. It is not quite one with extreme force yet. I'm inclined to say that this isn't a move by Tokyo to step in but we'll see in the next few minutes. It could also be exacerbated flows making its way through some stop orders. Update: The move is starting to build and does have the suggestions of intervention.