According to this recent blog post Korbit, Korea's largest Bitcoin exchange now supports Monero(XMR) trading.
This Multi-Trading Service supports trading of more various digital assets other than just Bitcoin, Ethereum and Ethereum Classic, which are already supported by Korbit. Therefore, if you are a level 3 or higher member of Korbit, you can take advantage of the service without the hassle of using a foreign service to do buy and sell digital assets.
What is the definition of level 3? Are you required to be a Korean citizen to use Korbit? What fiat currencies are supported?