Kevin is not answering my emails...
This is most likely a scam.
There is no easy way to do this because the problem is getting the money out of the country.
This has been tried many times in the past.
I know this might sound obvious... but what if you just withdrew the cash then used that to buy USD at anight airport?
Or buy a debit card and fill it with your bank account, then send the debit card overseas...
And Koreans can use paypal, yes? So they can convert to paypal funds too.
If all fails... just buy gold or silver at a gold/silver exchange, thus converting your funds to gold /silver, then giving the exchange account access to your partner?