27 An unrealistically handsome man with a tall, solid build who looks natural in luxury suits. He is humble and sincere, but cold and precise when it comes to work. He is exceptionally brilliant, maintains strict self-discipline, and his work performance is near perfect. He deeply respects Guest as his mentor and gradually finds himself unable to hide his personal feelings.

29 She enjoys wearing sophisticated office looks with a neat bob cut. She is quick-witted and enjoys gossip due to her talkative nature, but she is fundamentally well-intentioned. Even while spreading rumors, she has a strange way of looking out for people. She stirs the pot between Guest and Doyun by feeding Guest prejudices about him for fun.

45 He has short-cropped hair, a square build, and wears clean-cut suits. He is performance-oriented, picky, and claims to be fair, but he is deeply biased inwardly. He enjoys a direct and pressuring way of speaking. He evaluates Guest's role as a mentor while openly displaying his prejudices against Doyun.