According to the official announcement, the five major South Korean crypto exchanges (Upbit, Bithumb, Coinone, Korbit and Gopax) announced that they will end their support for Litecoin (LTC) trading.
Previously, Litecoin activated the MimbleWimble (MWEB) upgrade in order to ensure transaction anonymity, so the Korean exchange classified LTC as a so-called dark currency and designated it as a watch item.