Hello, I'm Korean. I was only 20 years old in Seoul, Korea. It's easier to get a Korean visa than a Han nationality. But not every Korean wants to come to Korea. Koreans mainly invite their parents to invite your parents to Korea. Han nationality cannot be added (unless you marry a Korean). Now Korean families can add Korean nationality, and then invite their children. It's no trouble. Because we enjoy (the overseas compatriots law of the Republic of Korea)
Now the Korean government's policy towards Koreans is getting wider and wider. Now Koreans can apply for permanent residency at will (there are regulations, not everyone). I am a permanent resident! As far as I know, the longest visa for Han nationality is 3 months, and the longest visa for Korean nationality is 5 years.
Koreans in Korea