A bipolar distribution defines Japanese governance. 87% of TSE Prime concentrates in two archetypes.
Of 1,576 listed companies on TSE Prime, the framework classifies 41% as Celestial and 46% as Chameleon. Where Korea concentrates 88% around board-side weakness, Japan splits between high-quality governance and R-axis weakness. The nine articles below anatomize this divergence.
- No. 01
The Bipolar Prime: Japan's 87% Concentration in Two Archetypes
41% Celestial, 46% Chameleon — 87% of TSE Prime concentrated in just two archetypes. The shape is distinct from every other Asian market the framework reads.
- No. 02
The Stuck Residual: Cross-Shareholding Architecture in Japan Prime
A decade of compression has reduced strategic shareholdings from 13.5% of TOPIX 500 net asset value (FY2015) to 8.4% (FY2023). What remains is structural: ninety-six firms above the ISS line.
- No. 03
The Unwinding Wave: Parent-Subsidiary Listings 2020 to 2025
Japan's parent-child listed-pair count fell from 285 to 212 between 2020 and 2025 — covering NTT Data, Sony Financial Group, Hitachi Construction Machinery, and the Toyota Industries take-private.
- No. 04
Shadow Governance: The Sodanyaku and Komon Advisor Layer
Japan's post-CEO sodanyaku and komon advisor positions function as institutional continuity carriers — and, in cases including Olympus and Daio Paper, as enablers of multi-decade governance failure.
- No. 05
The Four-Tier Audit Governance of Japan Prime
Japan permits four distinct audit-governance structures simultaneously. The modal Audit-and-Supervisory Committee model reads at 47% of rated Prime — neither the most rigorous nor the most lax.
- No. 06
Cross-Shareholding in Two Idioms: Chaebol and Keiretsu
The same English word names two structurally different governance mechanisms. Korea reads on the B-axis through chaebol cross-shareholding; Japan reads on the R-axis through keiretsu architecture.
- Case 01
Counterfactual KS: Olympus 1985 to 2024
A multi-decade tobashi accumulation that survived three CEO transitions, ended by a whistleblower in two weeks of public unraveling. Retrospective application of the framework's KS-6 indicator demonstrates a 24-month lead time.
- Case 02
The Eight-Year Arc: Toshiba 2015 to 2023
A 2015 accounting disclosure opened an eight-year cascade — capital crisis, activist intervention, government scandal, structural reform rejection, and a December 2023 take-private after seventy-four years of listing.
- Case 03
The Structural Condition: Toyota at FY2025
One of the world's largest auto manufacturers reads as Grade B, not Grade A. A counter-narrative to failure-trajectory cases — the framework's structural snapshot is distinct from failure prediction.