| JP-A-00 | Militarist Japan and the Pacific War (1931–1945) | 18 September 1931 through 2 September 1945. This document ends exactly where [JP-A-01] begins. | Fact-checked | 12,545 | 16 |
| JP-A-01 | The Yoshida Doctrine and the 1955 System Foundation (1945–1960) | 15 August 1945 through 19 July 1960 | Fact-checked | 15,386 | 3 |
| JP-A-02 | Abe Shinzo's First Premiership and the 2006–2007 Post-Koizumi Inflection (2006–2007) | September 2006 through 25 September 2007 | Fact-checked | 15,809 | 10 |
| JP-A-03 | Fukuda Yasuo's Premiership and the Post-Abe-1 *Nejire Kokkai* Management (2007–2008) | September 2007 through 24 September 2008 | Fact-checked | 16,163 | 22 |
| JP-A-04 | Aso Taro's Premiership and the Final LDP Government Before the 2009 DPJ Landslide (2008–2009) | September 2008 through August 2009 and 16 September 2009 | Fact-checked | 12,057 | 12 |
| JP-A-05 | The DPJ Government — Hatoyama, Kan, and Noda Cabinets (2009–2012) | 30 August 2009 through 26 December 2012 | Verified | 13,529 | 0 |
| JP-A-06 | 2011 Tohoku Earthquake, Tsunami, and Fukushima Nuclear Disaster | 11 March 2011 through mid-2025 | Verified | 5,132 | 0 |
| JP-B-01 | Abe Shinzo's Return to Power (2012) | August 2012 through July 2013 | Verified | 7,844 | 0 |
| JP-B-02 | Abenomics — The Three Arrows (2012–2020) | December 2012 through September 2020 | Verified | 15,077 | 0 |
| JP-B-03 | 2014 Cabinet Reinterpretation of Collective Self-Defence and the 2015 Peace and Security Legislation | December 2012 through end-FY 2017 | Fact-checked | 12,970 | 8 |
| JP-B-05 | TPP, CPTPP, and Japan's Emergence as Trans-Pacific Trade Leader (2010–2026) | March 2010 through May 2026 | Fact-checked | 11,703 | 27 |
| JP-C-01 | Suga Yoshihide's Premiership (September 2020 – October 2021) | August 2020 through 4 October 2021 | Fact-checked | 14,197 | 7 |
| JP-C-02 | The 2020 Tokyo Olympic and Paralympic Games — Postponement, the No-Spectator Games of July–August 2021, and the Politics of Olympic-Governance Under Pandemic Conditions | 7 September 2013 through October 2021 | Fact-checked | 12,106 | 9 |
| JP-C-03 | Kishida Fumio's Premiership and the "New Capitalism" Doctrine (October 2021 – October 2024) | 29 September 2021 through 1 October 2024 | Fact-checked | 14,071 | 10 |
| JP-C-04 | The 2022 National Security Strategy and Japan's Defence Build-Up (2022–2026) | 2022–2026 | Fact-checked | 11,874 | 36 |
| JP-C-05 | The Assassination of Abe Shinzo (2022) | 8 July 2022 through December 2024 | Fact-checked | 7,579 | 2 |
| JP-D-01 | The 2024 LDP Presidential Election and the Ishiba Shigeru Premiership (September 2024 – Present) | 14 August 2024 through early 2025 | Fact-checked | 14,206 | 38 |
| JP-D-02 | The Ishiba Cabinet Architecture and Operations (October 2024 – Present) | 1 October 2024 through early 2026 | Fact-checked | 12,243 | 45 |
| JP-D-03 | The Ishiba Minority Government, the 2024 General Election Aftermath, and BoJ Normalisation under Ueda (2024–2025) | 27 September 2024 through May 2025 | Fact-checked | 14,270 | 49 |
| JP-D-04 | Post-Ishiba LDP Leadership and Political Realignment — From the Ishiba Minority-Government Premiership through the July 2025 Upper-House Election to the Post-Ishiba LDP Leadership Contest and the 2027 Lower-House Trajectory (September 2024 – April 2026) | 27 September 2024 through 29 August 2026 | Fact-checked | 14,351 | 62 |
| JP-E-01 | Japan's Immigration and Foreign-Worker Policy from the 2018 *Tokutei Ginō* Legislation to the 2027 *Ikusei Shūrō* Replacement of the Technical Intern Training Programme, the December 2024 SSW Quota Expansion to 820,000, the 2024 Permanent-Residence-Revocation Diet Debates, and the Ishiba and Post-Ishiba Politics of the Foreign-Worker Question against the *Sanseitō* Restrictionist Surge (2018–April 2026) | 2018 through April 2026 | Fact-checked | 15,164 | 3 |
| JP-F-01 | The US–Japan Alliance from Koizumi's "Boots-on-the-Ground" Era to Trump-2 Transactionalism: Basing, Burden-Sharing, Collective Self-Defense, and the Counterstrike Turn (2005–2026) | 2005 through 2026 | Fact-checked | 11,279 | 24 |
| JP-F-03 | Japan–Korea Relations from Yoon's Reset to Yoon's Impeachment to Lee Jae-myung: Camp David, GSOMIA, and the Forced-Labour Settlement (2022–2025) | May 2022 through mid-2025 for the main document body | Fact-checked | 16,250 | 17 |
| JP-F-04 | Japan–China Relations from the Fukushima Treated-Water Discharge to Ishiba's Strategic Pragmatism (2022–2025) | December 2022 through 29 August 2026 | Fact-checked | 18,989 | 22 |
| JP-F-05 | Japan–Taiwan Strategic Alignment from Abe's "Taiwan Emergency" Doctrine to the Ishiba-Era Taiwan-Clause Debate (2022–2026) | 2022 through 2026 | Fact-checked | 14,319 | 17 |
| JP-F-07 | The Japan–India Strategic Partnership from the Post-Nuclear-Test Estrangement to the Modi-Era "Special Strategic and Global Partnership" — Abe's "Confluence of the Two Seas," the Quad, the High-Speed-Rail and Industrial-Corridor Economic Pillar, and the China-Balancing Logic and Its Limits (2005–2026) | 2005 through 2026 | Fact-checked | 9,773 | 25 |
| JP-G-01 | The Bank of Japan and the Unconventional-Monetary-Policy Era (2013–2024) | 1997 through August 2024 for the main document body | Fact-checked | 14,089 | 4 |
| JP-G-03 | Japan's Demographic Transition — Population Decline, Pension Reform, and the Caregiving State (1990–2026) | 1990–2026 (with extended baseline reference to the 1985 *Kōseinenkin-hoken-hō* revision creating the… | Fact-checked | 10,430 | 7 |
| JP-H-PM-01 | Junichiro Koizumi (1942–) | 2001–2006 | Verified | 8,162 | 0 |
| JP-H-PM-02 | Shinzo Abe (1954–2022) | 1954–2022 | Fact-checked | 8,530 | 2 |
| JP-H-PM-03 | Suga Yoshihide (1948–) | 1948– | Fact-checked | 6,428 | 2 |
| JP-H-PM-04 | Kishida Fumio (1957–) | 1957– | Verified | 13,049 | 0 |
| JP-H-PM-05 | Fukuda Yasuo (1936–) | 1936– | Fact-checked | 13,848 | 13 |
| JP-J-01 | Three Accounts of the Comfort Women Issue and the 2015 Agreement (1932–1945; 1991–2026) | 1932–1945 and 1991–2026 | Fact-checked | 10,158 | 40 |
| JP-J-03 | Yasukuni Shrine, the A-Class War-Criminal Enshrinement, and the Politics of Historical Memory (1978–2025) | 1978 through 2025 | Fact-checked | 15,889 | 1 |
| JP-K-03 | The October 2024 House of Representatives Election, the LDP Slush-Fund Scandal, and the Return of Minority Government (2023–2024) | Late 2023 through the end of 2024 | Fact-checked | 17,655 | 44 |
| JP-K-04 | The 1 July 2014 Cabinet Decision Reinterpreting Article 9 and the September 2015 Peace and Security Legislation — The Decision Architecture (2012–2016) | December 2012 through March 2016 as the core decision window | Fact-checked | 10,427 | 28 |
| JP-N-01 | Japan in International Perceptions — Number One, Lost Decades, and Quiet Return (1979–2026) | 1979–2026, weighted post-2000 | Fact-checked | 10,109 | 30 |
| JP-N-03 | Japan's Compound Demographic Crisis — Record-Low TFR, Pension and Elderly-Healthcare Sustainability, Specified Skilled Worker Expansion, and the Pronatalism-Immigration-Productivity Trilemma under Ishiba and Post-Ishiba (2024–April 2026) | 2024 through April 2026 | Fact-checked | 13,117 | 4 |
| JP-R-01 | Japan Governance Books Canon | 1945–present | Fact-checked | 8,373 | 3 |