In the same year, Hyun-Bin was also cast for the MBC drama "Nonstop 4," which was quite popular.
Through his work in "Nonstop 4," Hyun-Bin was able to improve upon his comedic timing.
After the runaway success of "My Name Is Kim Sam-soon," Hyun-Bin picked the mellow romantic movie "A Millionaire's First Love" for his next project.
"A Millionaire's First Love" was far less successful doing poorly at the box office and with critics.
In retrospect, Hyun-Bin's work in "I Am Happy" was able to help further develop his talents as an actor and also a human being. In 2008, Hyun-Bin was cast for the KBS2 drama "Worlds Within......".
He played television PD Jung Ji-Oh, opposite actress Song Hye-Kyo who played televison PD Ju Jun-Young.
Fortunately for Hyun-Bin, he was admitted to Chung-Ang University and his parents relented.At Chung-Ang University, Hyun-Bin worked lighting and managed the school theatre.He also participated in school plays. In 2003, Hyun-Bin made his acting debut in the KBS drama "Bodyguard". He played a stalker of Han Shin-Ae (played by Lee Se-Eun).Hyun-Bin would play a man suffering from a mental illness and institutionalized in a mental hospital.Prior to taking the role, he wasn't sure if he could play the character adequately, but he told the director that he would do his best.