TL;DR: EUR/JPY and AUD/JPY have broken key technical support this week, but the weekly performance breakdown shows only 0.1–0.3 percentage points of that weakness comes from genuine Yen strength—the rest reflects Dollar and Yen as the two strongest majors, with intervention risk capping USD/JPY and forcing Euro, Aussie, Sterling and Kiwi weakness to pass directly into their Yen crosses.