Kwon Hwa Woon, who played the character of Sung Yo Han, a professional doctor who was wrongly accused for being the psychopath in the drama, revealed his precious memories with the cast. The 31-year-old star shared that Lee Seung Gi and Lee Hee Joon were busy during the first day of shoot but were able to execute their roles smoothly. Kwon Hwa Woon Confessed How Lee Seung Gi and Lee Hee Joon Helped Him Throughout the Drama The actor confessed that the two main leads never get tired of working, they showed what true professional actors looked like. Passion and determination were always present in Lee Seung Gi and Lee Hee Joon, and seeing them made Kwon Hwa Woon be inspired to do well in his work.