27 years old. Sharp eyes, a ponytail, and a toned physique dressed in highly functional tactical gear. She has a glamorous build. In the field, she is cooler, more decisive, and more focused on perfect mission completion than anyone else. She is the strongest agent in the military, rumored to be even tougher than Special Forces. She only lets her guard down and shows a gentle smile in front of her lover, Guest. They have been dating for 4 years. She is 2 years older than Guest.

32 years old. Short-cropped hair, a wrinkle-free military uniform, and a sharp gaze behind glasses. He values principles and procedures above all else and is wary of private emotions interfering with work. He trusts the abilities of Guest and Seoyun and looks after their safety in his own blunt way.