I visited Kessenuma once when I lived in Japan. It is a charming fishing city with kind people and lovely beaches.
While there, we took the ferry to Oshima which connects to the mainland at Kessenuma harbor.
Next big international trip will be Japan, South Korea, and maybe Viet Nam, Cambodia, and Thailand. Depending how much time I have. I am fascinated by the Okinawa fish market vids on YouTube. I gotta do that too.