Map asset by lalamalink — CC0 1.0 Universal
https://github.com/lalamalink/japan-map-svg
Version: 2026.06.30
https://creativecommons.org/publicdomain/zero/1.0/
Retrieved: 2026-09-08
Original SVG SHA256: c4817c97dedab08d20a2f4afccd4a780befc57040d48f7f0cded79d10e084fbc
Modification: path coordinates converted to JSON; shared edges split for faction borders.
Simplified illustration, not a survey or administrative boundary source.