Sion Releases Updated "National Municipality PR Power Ranking" (Vol.1.1) Incorporating Feedback from Local Governments

Sion Co., Ltd. (Headquarters: Minato-ku, Tokyo; CEO: Tsutomu Inoue; hereinafter "Sion") has released the updated version (Vol.1.1) of the "National Municipality PR Power Ranking 2025 Edition (Vol.1)" today. This update is based on the feedback and new data provided by numerous local governments following the initial release on May 21, 2026.

Background: Fostering Dialogue with Municipalities Sion's mission is to "solve Japan's social issues through business." By visualizing objective numerical indicators, the company aims to encourage municipalities to understand their rankings and work together to enhance regional information dissemination. Since the release of Vol.1, several public relations officials from across the country provided valuable insights and new data. Adhering to the policy of prioritizing such feedback as the most important evidence for updates, Sion conducted a thorough re-calculation across all four evaluation axes.

Key Updates in Vol.1.1 This update focuses on increasing the accuracy of indicators based on verified field data rather than changing the fundamental evaluation design. The two main pillars are:

- **Verification of Communication Power and Stricter AIO Correction**: Re-counted the number of press releases for each municipality (including manual checks) and strictly applied the "AIO/LLMO (Generative AI Search) Observability Correction," a key factor for next-generation PR. - **SNS Axis Refinement**: Re-tracked official accounts managed by each municipality to aggregate figures that reflect actual usage.

The re-analysis involved technical (AI) and human cross-checks in the presence of external partners and supervisors with extensive expertise in the PR industry.

Ranking Highlights (Partial Excerpt) While some municipalities saw changes in their deviation values and categories, the overall structure of the ranking remains stable.

- **Prefectural Category: Fukui and Osaka Swap Places**: In the upper bracket of integrated rankings, Fukui Prefecture and Osaka Prefecture changed positions. Fukui's communication power deviation rose from 51.19 to 52.69, moving it up to 4th place above Osaka. - **No Change at the Top**: - Integrated Top: Tokyo (Integrated Deviation: 68.77; "Outstanding Type") - Ordinance-Designated City Category Top: Kobe (Integrated Deviation: 61.08; "Outstanding Type")

Sion aims to deepen "constructive dialogue" with municipalities through this updated data and build partnerships to raise the level of regional information dissemination in Japan.