That sort of spike leaves me rather skeptical, although it's not a knock against the currency. Somebody's pulling some funny stuff at Upbit.
Upbit, for your reference, is either number 1 or number 2 in terms of trade volume amongst Korean exchanges, wrestling with Bithumb for the top spot. Upbit is backed by Dunamoo, which is affiliated with KakaoCorp, the company behind the popular Korean messenger app KakaoTalk.
Just some information as it seems you were curious about the Korean market. :)
oh wow, thanks for letting me know. Yes wanted to find out more so as to be a well-informed investor. . it seems like Korea has a lot of backing behind cryptocurrencies