# Japan secondary capital race expands with regional alliances > Live situation record from CLSTR: https://clstr.news/situations/japan-secondary-capital-race > Updated: 2026-08-31T02:39:18.000Z. Sources: 18. Developments: 6. In late July 2026, Japan’s Diet passed a law establishing a “sub‑capital” framework to decentralize functions from Tokyo and provide a disaster backup. The legislation, which passed the upper house by a narrow 123-121 vote, addresses a roughly 70% chance of a magnitude-7 earthquake striking the Tokyo area within 30 years. The law aims to ensure governance continuity during disasters while providing tax incentives and new facilities to the chosen region. Osaka Prefecture quickly announced its intention to apply, with Governor Yoshimura Hirofumi advocating an “Osaka Metropolis” model to reorganize the city into special wards. Within days, Gunma and Kyoto prefectures joined the contest, citing low disaster risk and historical precedent. In mid-August, Hokkaido and Sapporo announced a joint proposal, with Governor Naomichi Suzuki noting the region’s geographic distance from Tokyo poses an “extremely low risk of simultaneous disaster.” Sapporo Mayor Katsuhiro Akimoto added that the city possesses the necessary functions to serve as an ideal location. By late August, the competition intensified through unexpected regional alliances. Hokkaido Governor Naomichi Suzuki and Osaka Prefecture Governor Hirofumi Yoshimura signed a cooperation agreement to jointly pursue designation as “sub-capitals.” This marks the first instance of two prefectures entering such an agreement to work toward the goal. The leaders discussed transitioning toward a “multi-polar, decentralized economic zone” and are considering making joint appeals to the national government to secure simultaneous designation. While proponents highlight urban revival and disaster preparedness, opponents have criticized the plan as a political maneuver intended to benefit allies of Prime Minister Sanae Takaichi. Critics have called for clear criteria that prioritize geological stability and disaster resilience over regional political interests. ## Timeline ### 2026-08-31: Hokkaido and Osaka sign agreement to pursue sub-capital status Hokkaido and Osaka Prefecture have signed a landmark agreement to jointly lobby the Japanese government for simultaneous designation as sub-capitals to ensure functional continuity during major disasters. 4 sources. https://clstr.news/cluster/hokkaido-and-osaka-sign-agreement-to-pursue-sub-capital-status ### 2026-08-22: Japan to designate backup capital to mitigate disaster risks Japan has passed a law to establish a backup capital to maintain government operations during disasters, sparking a competitive race among 13 cities including Osaka, Nagoya, and Fukuoka. 4 sources. https://clstr.news/cluster/japan-to-establish-secondary-capital-for-disaster-preparedness ### 2026-08-18: Hokkaido and Sapporo propose sub-capital status Hokkaido and Sapporo are collaborating to propose Hokkaido as a designated sub-capital to Japan, citing low risk of simultaneous disaster with Tokyo and the city's existing functional capacity. 2 sources. https://clstr.news/cluster/hokkaido-and-sapporo-propose-sub-capital-status ### 2026-08-05: Japan moves to designate a secondary capital amid disaster‑preparedness push Japan's parliament approved a bill to name a secondary capital to ensure government continuity after disasters, with Osaka and Fukuoka among leading candidates. 3 sources. https://clstr.news/cluster/japan-moves-to-designate-a-secondary-capital-amid-disasterpreparedness-push ### 2026-07-30: Gunma and Kyoto prefectures seek designation as Japan’s secondary capital Gunma and Kyoto governors announce bids for Japan’s secondary‑capital status, joining Osaka and Fukuoka in seeking a backup hub for Tokyo. 2 sources. https://clstr.news/cluster/gunma-and-kyoto-prefectures-seek-designation-as-japans-secondary-capital ### 2026-07-27: Osaka Prefecture Pushes for Designation as Japan’s First Sub‑Capital Japan’s new sub‑capital law passed narrowly; Osaka, Fukuoka, Aichi and others seek the status. Governor Yoshimura touts Osaka as a suitable backup hub and backs an Osaka Metropolis plan. 7 sources. https://clstr.news/cluster/osaka-prefecture-pushes-for-designation-as-japans-first-subcapital --- Cite as: Japan secondary capital race expands with regional alliances. CLSTR, https://clstr.news/situations/japan-secondary-capital-race