That doesn't look like Korea, I'm guessing Japan. The text looks like Chinese characters, and Korea hasn't used those for hundreds of years. Korean script is more blocky and easily recognizable even with this incredible level of blur.
The black speech bubble looks absolutely like Korean to me. It's possible the text underneath is simply a translation for Japanese and Chinese, though.
Perhaps. I can't make out the black bubble, it's too blurry, but I can definitely tell the white bubble is not Korean (SO is Korean and I can read but not speak Korean). If there were just a few more pixels, I could probably read what it says, and I can distinguish Japanese and Chinese, so I could make an educated guess about it being a translation.
It apparently is, but it was so pixelated it looked like it could be Chinese or Japanese, and those posts are much more common than posts about Korea.
Someone posted a higher res image elsewhere, so I transcribed the Hangul and ran it through Google translate, in case anyone is interested: https://sh.itjust.works/comment/15943722