North Korea isn't happy. China reinforced its goal to become a military power. Throw in the rising confidence being expressed by Japan's political leaders. Add a dab of the US "Asian pivot" on top for good measure and you have the potential for safe haven flow back into yen. It would likely trigger a decent correction in USD/JPY and wrong foot the market which is now looking in one direction.
USD/JPY Weekly: Counting in threes-A-B-C-as discussed in my recent forex webinar, here is the stylized setup weekly: