According to financial data provider KG Zeroin MP Doctor, the USD/JPY rate touched 163.69 on July 27, marking the lowest level since December 1986—a 39-year and 7-month low. The yen has remained above 163 for five consecutive trading days.
Meanwhile, KRW/JPY fell to 890.06, also hitting a 1-year and 8-month low, as the Korean won strengthened. Analysts attribute the yen weakness to Japan's slower economic growth and the Bank of Japan's cautious approach to further rate hikes, combined with the widening interest rate differential between the U.S. (3.50–3.75%) and Japan (1.00%).