From November 10, 2023, direct flight between Matsuyama and Busan will inaugurate
https://news.yahoo.co.jp/articles/f74c548d87fe9bb0dc256c4806c42e7e4f2c4945
(Summary)
It is the only and first regular flight between Busan and a city in Chugoku and Shikoku, Japan.
3 flights per week are planned.
(Summary ends)
Even though Busan is the 2nd largest metropolis in Korea, there wasn't direct flight with a city in Chugoku and Shikoku. That's what I didn't know.
