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Lee Soo-hyun (Kay) – Actor Lee Joon-gi
An NIS agent. Underneath his quiet demeanor, he has a violent temper. At a young age, he lost his mother when she was killed by Mao, a Triad gang member. NIS Agent Kang Joong-ho adopted him and raised him with his son Min-ki. After learning that Mao became a Triad boss, he infiltrates the gang as an undercover agent. He assumes a new name, Kay, and goes on a rampage as a gangster to gain the trust of his gang. |
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Kang Min-ki – Actor Chong Kyung-Ho
An NIS agent. He a very competitive person behind his easy-going smile. As the son of NIS Chief Agent Kang Joong-ho, he grew up with Soo-hyun like brothers. After becoming an NIS agent like his father who, he admires the most in the world, he gets involved in a love triangle with Soo-hyun and finds himself competing against him at the agency. When Soo-hyun leaves the agency, he confesses his love to Ji-woo and they become lovers. |
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Seo Ji-woo – Actress Nam Sang-mi
An art director. She has a bright personality and is very considerate to other people. She? honest about her feelings. After meeting her childhood friend Soo-hyun one day, they begin dating. But then Soo-hyun leaves her suddenly. She becomes Min-ki?셲 girlfriend after that and while she was getting over her painful breakup with Soo-hyun, she meets ? |
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