According to Zhichun Finance APP, Finance Minister Katsunobu Kato stated on Friday that the yen has started to decline rapidly again, the government is "vigilant" about recent Forex trends, and is prepared to intervene if speculative actions are deemed excessive. The dollar against the yen rose to a high of 157.93 on Friday, the highest since July, after the Bank of Japan decided to keep interest rates unchanged on Thursday, and Governor Kazuo Ueda did not give much clue about when borrowing costs might be increased.

Katsunobu Kato said at a regular press conference on Friday, "We have recently seen one-sided and severe fluctuations. We are shocked by the recent trends in the Forex market, including those market dynamics driven by speculators, and we will take appropriate action against excessive market volatility."

Japanese policymakers rarely explicitly describe the situation in the Forex market as "worrisome," indicating increasing government concerns about the depreciation of the yen.

Later that day, while speaking to reporters, Japan's top currency diplomat Atsushi Mimura also reiterated the government's position, expressing concern over exchange rate trends and stating readiness to take appropriate action.

The Bank of Japan's monetary policy meeting ended hours after the Federal Reserve's interest rate cut, but hinted that the path for easing next year will be more cautious, suggesting that the narrowing of the US-Japan interest rate differential may not occur as quickly as previously expected.

When asked about the US-Japan interest rate differential and the Bank of Japan's communication style, Vice Finance Minister Mimura, responsible for international affairs, declined to comment.

The last time the Japanese government intervened by buying yen was in July, when the yen's exchange rate had fallen to a 38-year low, with the dollar to yen exchange rate breaking 161.

Kato also stated at a press conference that the finance leaders of the Group of Seven (G7) held an online meeting last night during Italy's presidency to discuss support for Ukraine and the impact of AI on the global economy. Kato mentioned that he and Bank of Japan Governor Ueda also participated in this appeal.