Question: What popular Korean drama  or K-drama, centered  on the personal and professional lives of those in the broadcasting industry, offering a realistic look at Korean drama production through the work and romance of two TV directors?
Sentence (from "Lim Yoon-ho"): Lim debuted with the Korean drama "7th Grade Civil Servant" (2013) and left a strong impression on the viewers with his acting performance.
Relevant evidence: No