Song Hyojung (F) majored in Art at university. Song also studied illustration at Hanguk Illustration School (Hills). She illustrated Insignificant Psychics series, A Big Plan to Get a Hundred On the Dictation Test, Way Too Different Twins, I'm Older than My Older Sister, Please Look After Grandma, The Children Who Read the Independence News Paper, Dalchan Knows Everything About the Degree of Kinship, and What Is Democracy?.