For much of the series he struggles with expressing his true feelings for Myung - ju .
He is often the straight man to the happy - go - lucky Si - jin and possesses a sharp deadpan sense of humor .
For much of the series man struggles with expressing man 's true feelings for Myung - ju .
He is often the straight man to the happy - go - lucky Si - jin and possesses a sharp deadpan sense of humor .