Unlike the past, where economics dictated a strong yen despite loose policy, markets are now driven by politics. The Japanese government is allowing the yen to devalue to manage its debt, even as interest rates rise. This weakens the yen, strengthens the dollar, and could fuel a US equity boom via carry trades.

Analysts predict significant volatility for the Japanese Yen, suggesting the currency may need to weaken substantially past the 155 mark against the dollar to create a "forcing function" for a policy response like intervention. This implies traders should anticipate choppy conditions rather than a smooth trend reversal.

Despite official statements against rapid currency depreciation in Japan and Korea, policymakers likely view a weaker currency as a beneficial stimulus. With negative output gaps and competition from China, the goal is not to reverse the trend but to manage its pace to avoid market disorder and US Treasury scrutiny.

The FX market is disproportionately focused on the immediate outcome of the next BOJ meeting, causing the Yen to weaken as rate hike odds are priced out. This ignores the largely unchanged medium-term outlook for monetary normalization. This short-termism has decoupled the Yen from longer-term rate spreads, creating a potential tactical opportunity.

Despite Japan breaking its deflationary cycle, the Bank of Japan is hesitant to raise rates. The current inflation is primarily attributed to a weak yen and supply-side factors like energy costs, not robust consumer demand. With real consumption still below pre-COVID levels, the central bank remains cautious.

Japan's Takahichi administration has adopted a surprisingly expansionary fiscal stance. Instead of allowing the Bank of Japan to hike rates, the government is using fiscal spending to offset inflation's impact on purchasing power. This "high pressure" economic policy is a key driver of the yen's ongoing weakness.

While a failure by Japan's ruling LDP to secure a majority could cause a short-term Yen rally, the medium-term bearish outlook is unchanged. Neither a new coalition nor the current party is likely to enforce fiscal discipline or prompt faster BOJ rate hikes, leaving fundamental weaknesses in place.

While historically ambivalent or even positive about a weaker yen, the Bank of Japan is reaching a threshold where currency depreciation excessively hurts households via imported inflation. This pressure could force the BOJ to hike rates earlier than fundamentally warranted to prevent the yen from 'getting out of hand,' marking a significant shift in its policy reaction.

The recent flattening of Japan's yield curve masks underlying structural weakness in the superlong-end bond market. Reduced purchases by the Bank of Japan will keep net supply high, creating a challenging supply-demand dynamic that domestic investors alone may struggle to absorb, even if the Ministry of Finance cuts issuance.