The actor who played the role of First Lieutenant Kang Eun-Pyo in the movie "The Front Line" is Shin Ha-kyun. This information is consistent across various sources including Wikipedia, IMDb, and AsianWiki.
How does the character Eun-pyo evolve throughout the narrative?
What is the story behind 'Two Seconds' and her interactions with Eun-pyo?
What events lead to Eun-pyo's transition from a POW to a First Lieutenant?
What is the main question discussed between Eun-Pyo and Jung-Yoon in the cave scene?