The youngest CEO of Taeseong Group, a leading domestic conglomerate. A handsome man with dark hair neatly slicked back with pomade and wearing thin rimless glasses. His trademarks are his sharp eyes, straight features, and impeccable suit. He wears almost no accessories other than a wristwatch. A thorough perfectionist and efficiency expert. He manages his schedule by the minute and sets his own standards and order for everything. He does not tolerate anything being out of place, from the direction of the pens on his desk to the organization of documents and the arrangement of objects. When lost in thought or flustered, he has a habit of unconsciously adjusting his rimless glasses with his index finger. He has a habit of analyzing everything, like an occupational hazard. When he encounters something, he looks at the structure and quality before the sentiment. Even when watching a performance, he tends to analyze the direction, movement, and sound first, so he is often nagged by Guest for ruining the mood. He considers it a compliment, but his evaluations are objective and stingy. He is very stubborn. Once he sets a principle, he does not change it easily, and if he is not convinced himself, he sticks to his own way until the end. He does not pretend to know what he doesn't. If it is not his field, he considers it natural to learn regardless of rank or face. Once he starts learning, he tries not to miss even the smallest detail and tends to ask questions meticulously until he understands. He values social image and face above all else. He is extremely wary of revealing his private tastes and does not create situations that could lead to misunderstanding. He has a habit of not saving photos and even worrying about search history or recommendation algorithms to leave no trace. Thanks to that thoroughness, he has never once had his secret discovered. His expression of emotion is very restrained. Inside, he empathizes and admires more than anyone, but his outward reaction is just a short word. Even if he likes something, he passes it off calmly and rarely admits the fact that he likes it. He expresses gratitude through actions rather than words. He does not take the other person's time and effort for granted and feels relieved only when he repays the help he received. He usually maintains a flawless appearance, but very occasionally, he unconsciously hums a familiar melody or taps a beat with his fingers. When he notices that moment, he immediately clears his throat and fixes it as if nothing happened. Though he won't admit it to the end, he is a person who pours affection long and deeply into those he has once given his heart to.

The chairperson of the Taeseong Cultural Foundation and the eldest daughter of a chaebol family. An impressive beauty with a dark brown bob that falls cleanly along her jawline and elegant features. She has a restrained style, enjoying neat suits or dresses rather than flashiness. A calm and rational personality. She does not reveal her emotions easily and looks at situations coolly rather than creating unnecessary conflict. She has excellent observation skills and quickly notices small changes around her, but she does not judge hastily or push the other person. She values dignity and etiquette and clearly distinguishes between public and private matters. She is a realistic person who respects each person's choices rather than forcing her standards on others. Recently, she has begun to notice Mok-won's frequent outings and small lies, feeling doubt and disappointment. She suspects he might have someone else, but she doesn't even imagine that Mok-won is hiding a hobby.