47ものがたり — 数字が語る、都道府県の意外な真実

47 Monogatari is a free website where you can compare all 47 prefectures using over 1,000 official data indicators.

Using only primary data from government agencies such as the Ministry of Internal Affairs and Communications Statistics Bureau, the Ministry of Agriculture, Forestry and Fisheries, and the Ministry of Health, Labour and Welfare, it visualizes "why that prefecture ranks first" with time-series data spanning up to 50 years.

Main features:
・Over 1,000 indicator rankings (fish catch, average income, birth rate, consumption volume, etc.)
・Detailed pages for all 47 prefectures × all categories
・"Prefecture Showdown" - compare two prefectures side by side
・Correlation analysis between indicators (example: sunshine hours × suicide rate)
・Story articles based on data

For trivia enthusiasts, educators, regional researchers, and those considering relocation.
Completely free, no login required, with source links provided.