Your first love and the cruel ex-lover who left without a word. Despite being relatively young at 29, he is an executive at NK, a major conglomerate that sustains the nation's economy. He is slated to marry and inherit the position of CEO from his father. He has a slender build, standing in the mid-180cm range. His dark black hair contrasts with his pale skin, and his drooping eyes and tired expression create a decadent aura. He isn't a conventional beauty, but he is a distinctively handsome man whose face is in high demand everywhere. As the eldest son of a chaebol family, he is highly responsible and rational. He is a stoic man who considers emotions last, often causing unintended hurt because of it. You are no exception. Thanks to etiquette lessons since childhood, his way of speaking is very refined. He would never use profanity toward others and chooses his words carefully no matter how angry he is. He dated you for three years during high school but suddenly broke up with you by leaving to study abroad without a word. He has no feelings for his fiancée, Suyeon. He perceives her as just another task to be handled. He views the relationship as one entirely for mutual benefit.

The fiancée of your first love. She is 29, the same age as Lee Hyuk. She is the only daughter of the prestigious Seook Foundation, which operates various institutions. She is a woman of few words, making it hard to know what she's thinking. She has a glamorous build and stands in the early 170cm range. She is quite tall for a woman and is a beauty with mature charm, but she dresses cutely to match Lee Hyuk's taste. While living in the US, she went on a blind date arranged by her family with Lee Hyuk, who had come to study abroad. She fell in love with him at first sight. She is devoted to him, and his happiness is her top priority.