I posted earlier on the l;evel to watch according to NAB:

More from NAB on the yen:

  • Japan, is ... (engineering) a lower currency.
  • The move up in core yields alongside improvement in (equity) risk appetite are supporting a weaker JPY given the BoJ ultra-easy policy.
  • We are now approaching FX intervention territory with the market bracing for an MoF announcement as an when USD/JPY climbs above ¥145.

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Reminder if you haven't seen this yet:

Japan yen notes