Dated, confidence-scored forecasts on Japan's fiscal machinery, geopolitics, and AI industry — written for international decision-makers, and scored in public. I keep score because it's honest. I do it in public because, frankly, it's fun.
No hindsight commentary. Each forecast is published before the deadline, with a confidence score and its reasoning — so the reasoning itself can be judged, not just the outcome.
Identify the behavioral principles of the actor in question — a ministry, a cabinet, a company. Institutions are more predictable than headlines suggest.
Build a falsifiable forecast with an explicit rationale, a confidence score, and a deadline. Timing is the key variable: when something accelerates matters more than why someone feels a certain way.
When the deadline passes, the verdict is announced in public — including the calls that went wrong, and the ones that went right for the wrong reasons.
The outcome occurred as forecast, and the stated reasoning held. The mechanism was right, not just the coin flip.
The outcome did not occur. The miss is recorded in full, with a post-mortem on where the reasoning broke.
The outcome occurred, but for reasons other than those stated. Scoring this as a win would be dishonest. So it isn't.
A "Lucky" verdict costs nothing to hide and everything to admit. That is precisely why it is declared — the ledger is only worth reading if it is honest when honesty is inconvenient.
The guidelines (概算要求基準) are expected in late July 2026. The forecast: the Ministry of Finance gatekeeps access to the new investment envelope at the entry stage, rather than leaving it open-ended. Full rationale, dated and immutable, is recorded on the Japanese-language ledger.
Budget request guidelines, supplementary budgets, MOF behavior, and the institutional choreography behind Japan's fiscal year — read as a forecastable system, not a news cycle.
Japan's position between Washington and Beijing: alliance management, energy security, and the timing of pressure — when things accelerate, and what that acceleration reveals.
Capital flows, sovereign AI policy, and the strategic entry of global AI players into Japan — tracked at the level of institutions and incentives rather than product launches.
| Format | Frequency | What it does |
|---|---|---|
| 予測FORECAST | Monthly | A dated, confidence-scored call with its full rationale, before the event. |
| 判定VERDICT | Per deadline | Hit, Miss, or Lucky — announced when each forecast's deadline passes. |
| 道標SIGNPOST | Monthly | A preview of the coming month's policy events and what to watch for. |
| 台帳照査LEDGER REVIEW | Quarterly | Self-scoring across the whole record: hit rate, calibration, and lessons. |
The authoritative record. Every forecast in full: dated, confidence-scored, immutable. If the layers ever disagree, the ledger wins.
Forecast declarations the moment they're made, and verdicts the moment deadlines pass. Real time, minimal ceremony.
The English-language digest for international decision-makers: what was called, what happened, and why it matters for Japan exposure.
Nihonbashi Forecast is written by Akira Hara, an analyst based in Tokyo with a professional background in Japan's financial services sector. The name comes from Nihonbashi bridge — the kilometre-zero point from which every road distance in Japan is officially measured since the Edo era.
The premise is simple: analysis of Japan is abundant, but scored analysis is rare. This site measures every claim from a fixed zero point — a public, dated, falsifiable record — so that readers can judge the forecaster by the same standard as the forecast.
予測は、真剣な遊びだ。
Forecasting is serious play. I keep score because it's honest.
I do it in public because, frankly, it's fun.