I am in Japan. Do I need a visa to go to Jeju Island in South Korea?

Jeju island doesn't need a visa, just buy a plane ticket and bring your passport ~

But I think you should go to the entry-exit administration office to go through the re-entry formalities. 3,000 yen at a time and 6,000 yen for many times.

If you want to go to Seoul, Korea and other places, you need a visa. However, if you have a Japanese visa, it is very simple to apply for a visa to South Korea. I did so, that is, I went to the Korean Embassy in Japan to fill out a form, post a photo and pay 3,000 yen. You can get a tourist visa for 15 days the next day.