Caroline Pendleton

She is a Eurasian (half Korean/half British) woman, recently arrived in Korea. She has lived in the United States for a while, learning the French martial art of savate. She has come to Korea because she is curious about her father's homeland and her siblings, who turn out to be Hae-Young and Hae-Jung. When she first arrives she lives temporarily at a motel while her father arranges for her to stay with her half-sisters for about a month. She has been employed as a language teacher and an assistant homeroom teacher under Hae-Young's supervision. Her first encounter with Jin-Ho, like her half-sister's, is not entirely without its troubles, ending in a fight and injury for her. Her opinion of Jin-ho changes, however, when he escorts her back to her motel room and shows concern for her well-being. As she has no full siblings she appears to harbour a strong desire for a warm relationship with her half-sisters, though this is complicated somewhat by their rather cold and distant relationship with their father. She expresses great romantic interest in Jin-Ho and has challenged Hae-Young Nah to see who can first win his heart (though it's not certain whether this is genuine or she just wants to bring the two together). Source: Wikipedia