Coinone is a South Korean exchange that allows you to buy and sell Bitcoin, Ethereum, Ethereum Classic and Bitcoin Cash for South Korean won (KRW).
Margin trading is available. Commissions vary depending on trading volume. There is no commission for deposits; withdrawal fees are 1KRW, 0.0005 BTC, 0.0005 BCH, 0.01 ETH, 0.01 ETC, 0.01 XRP.