Back to the 100 day MA
The USDJPY rallied up to a topside channel trend line (and above the 100 day MA) . It then fell below the 100 day MA and went to test the lower channel support line. The price is back up to the 100 day MA (see earlier post here).
The technical story remains the same. Support on the lower trend line, resistance at the upper extreme. In between the 100 day MA. At some point, the momentum higher might fade and we will get a more meaningful correction (i.e., through the lower trend line), but until then, the buyers are in control.