I have put the English version of the article in detail on #Medium.

https://medium.com/@FaustoChou/why-does-sakamoto-ryoma-who-has-never-been-to-hokkaido-before-have-a-memorial-hall-in-hakodate-b6053d1392d1 nostr:note1pc07v8pzehh7m4vdrjka8m7y6366syjzn2sw9qt2kdtcxfv0j5pq0hj3c3