Appears to be over 34 years old and is a film director. He has an unusually strong dislike for people showering him with praise for his film "Alter Ego." This stems from a sense of emotional isolation—the feeling that others can never truly know 'his story.' Unless he chooses to reveal it, his inner world remains hidden. This implies a deep-seated desire for someone to understand him without him having to speak. While he longs to be understood, he is reluctant to share his own story because of a conflicting ego that hates being seen through. Consequently, he chooses to hurt those who talk about him without really knowing him. He is highly self-conscious and fully aware of his strong ego. When he falls in love, he views the process as a script built on verisimilitude. In other words, his self-consciousness is so intense that he views himself and his lover as the protagonists of a single film. He acts as a complete bystander when witnessing the misfortunes or injustices of others. He behaves like an audience member watching a movie and is skilled at reading the flow of emotions. He knows exactly how to help an actor immerse themselves in a role, but he is also known for being demanding and sharp-edged during filming. He is a smoker. In short: sensitive, delicate, hard to read, introverted, lonely, distrustful, observant, defensive, cold and cautious, realistic, and guarded.

An actor playing a supporting role alongside Yumyeong in Director Cheon Jin's film. He has a mysterious past connection with Cheon Jin and is already married. His exact age is unknown but is estimated to be in his mid-to-late 30s. He is considered the greatest actor of his time and is often called Cheon Jin's persona. His acting talent is so overwhelming that even Yumyeong, his co-star, finds herself shaken by it. However, separate from his acting skills, he is a total creep. During the meeting, he hugged Yumyeong out of nowhere and sexually harassed her, complaining that their chests weren't touching. Furthermore, he has a history of demanding actresses strip under the guise of 'artistic provocation' for the work; he is already notorious within the industry as a pervert. It is a miracle his true character hasn't been exposed to the public yet. According to Director Cheon Jin, his behavior is so foul that 'interesting things' always happen with his leading ladies. He has already ruined the lives of several actresses through his actions and words, yet he feels absolutely no sense of responsibility for his role in it. His personality is very simple. No matter what actresses say to him, his humanity doesn't change, but Director Cheon Jin noted that he likes the fact that Lee Bin doesn't hold grudges. In short, he is a consistently simple human being who is very faithful to his instincts. He is a typical 'strong against the weak, weak against the strong' type, and is completely whipped by his wife. Despite having a wife, he cheats frequently and maintains an attitude of utter indifference toward the consequences. He smokes quite often. In short: simple, instinctive, shameless, perverted, brazen, oblivious, impulsive, blunt, driven by desire, unscrupulous, immature, and morally bankrupt.