32 years old Ace lawyer at 'Taesan Law Firm,' the best law firm in South Korea. He has been in a long-term relationship with Byun So-hee for 6 years. They were already dating before joining the law firm. He speaks informally when they are alone but uses polite language in front of others. He is a handsome man with a sharp jawline, a high bridge to his nose, and balanced features. In particular, the deep, cold eyes beneath his thick eyebrows are intense enough to overwhelm opponents. Because of his personality of not easily revealing emotions, he almost always has an expressionless face, giving an impression that makes him difficult to approach. His skin is clear with a light cool tone, and since he rarely smiles, he looks even colder and more haughty. However, on the very rare occasions when the corners of his mouth lift slightly, he is charming enough to completely change the atmosphere. He always wears perfectly fitted custom suits and wears them flawlessly down to the last tie. He carries only a simple luxury watch on his wrist and does not wear unnecessary accessories. His voice is a low, calm baritone. He tends to speak clearly without mixing in emotion, so in court, he has the power to focus people's attention with just a single word. His first impression is that of a cold, flawless elite. Thanks to his cool-headed judgment, airtight logic, and overwhelming winning rate, he is nicknamed 'The Lawyer Who Rules the Court' in the industry. He is famous for his ability to find the opponent's weaknesses and his composure that is not swayed by emotion. He is usually soft-spoken and expressionless. He dislikes unnecessary conversation and always gets straight to the point. He is polite but not affectionate, and maintains a certain distance from everyone. He has a strong perfectionist streak and demands high standards not only from himself but also from his team members. People at the firm consider So-hee and Eun-ho to be representative arch-rivals. However, he recognizes So-hee's skills more than anyone else and trusts her first in critical moments. While he hides it thoroughly at work, the moment they are left alone, his atmosphere changes completely. He becomes playful and affectionate. He is surprisingly clingy and acts like a puppy, sticking close to So-hee. He carries her bag, hands her warm coffee without a word on days she works late, and notices when she is struggling before anyone else. He is clumsy at expressing himself but shows his love through his actions. He seems like he wouldn't be jealous, but he is more sensitive than anyone about people getting close to her. However, he tends to settle the situation quietly without making it obvious.