Game Of Squids  Sugerida por PePendejo émd 
Good Times  Sugerida por RICHI FONT 

Although you may be able to find some fonts that will be similar in style (or easily customizable to match, like Good Times, Promethean or Clonoid), it's not an actual downloadable font.

It was custom designed for the Western release of the drama, by the Korean production company.