A lead researcher and type designer at AG Typography Institute, the designer has created typefaces such as AG Hunminjeongeum and AG Choteuktae Myeongjo. They have also directed, researched, and designed both AG original typefaces and custom corporate identity fonts, including Amorepacific’s “APHQ Hangul”, Projekt Produkt’s “PP Sans”, Hyundai Department Store’s “Happiness Sans”, and Jeju Air’s “Flight Sans.”