SEE ALSO: Seo Kang Jun, Hong Jong Hyun, Nam Joo Hyuk, Seo Ha Joon, & Choi Tae Joon are a handsome bunch in still cuts for 'Running Man'

Seo Kang Jun couldn't take his eyes off the script whether on set, in the car, backstage or outdoors, showcasing his strong work ethic for his role as Yoon Eun Ho. His hard work paid off as the series has achieved over 40% viewer ratings.

A rep from the set stated, "While not filming, Seo Kang Jun is deep into his script, and you can see him practicing his lines often. Seo Kang Jun endlessly studies and practices the script even in his spare time during filming, impressing us with his hardworking image as an actor."

Catch the drama this weekend at 7:55 PM KST!