Moon Seo Yoon

No Go Jin, the highly intelligent CEO of GOTOP Education, is a popular mathematics instructor with a handsome appearance, high IQ, and wealth. Despite having only a high school education, his success is due to his extreme intelligence and narcissism. One day, he is warned that he will be murdered. Lee Sin A, his quiet and introverted secretary, is diligent but unnoticed by both her boss and colleagues. After working for No Go Jin for over a year, she discovers she has little time left to live. (Source: MyDramaList)