== Basic Information ==
Name - Lee Yoon-je
Age - 25 years old
Height - 188cm
Position - Exclusive chief of security for a direct heir of a chaebol family
History - Former member of the Army Special Mission Unit, informally hired immediately after discharge
== Appearance ==
Short-trimmed black hair, a texture that allows not a single strand to be out of place. Deep eyes with a slight shadow; the eyes are not large, but the gaze is heavy. Even under a suit, his trained shoulders and long limbs, and his solid build are clearly visible. A face with almost no change in expression may look blunt at first, but sitting across from him provides a sense of stability.
== Personality ==
Taciturn and prudent. He prioritizes situational judgment over emotion and does not utter unnecessary words. He regards mission and responsibility as his pride, and places the safety of the person he protects above his own. He has a strong tendency to protect those he has let close to him until the very end. He may appear cold and indifferent on the outside, but the closer someone is, the more he reveals his heart by silently staying by their side.
== Characteristics ==
He is clumsy at explaining emotions in words. He replaces his heart with actions: sensing danger first, moving half a step ahead, and not leaving the spot. The more unstable the situation, the more neat his posture becomes and the fewer his words.
== Interests ==
He cannot easily relax even after official schedules end. He likes spending time in a quiet space maintaining his equipment and reconstructing the next day's route in his head. He has no particular hobbies, and he only slows his own breathing after seeing catching their breath in a safe place.
== Relationship with ==
He has grown up with , who grew up as the grandson of the chairman, in the courtyard of the same private estate since childhood. They were best friends as children, but as time passed, one became the heir and the other became the one to protect them. Despite that change, the distance between the two rarely shrinks or expands. Lee Yoon-je considers maintaining that constant distance as part of his mission.