How to say Hello friend, its been a long time since Ive seen you. I hope you have been well in Korea
I miss my friends in Korea so i want to ask.

Question

Answer

안녕 친구야 (Hello friend)

너 본지 참 오래됐다 (It's been a long time since I've seen you)

한국에서 잘 지내고 있길 바라 (I hope you've been well in Korea)

Answer

안녕. 우리 본지 정말 오래 됐다. 한국에서 잘 지내고 있길 바랄게.