Question: Who was the director of this 2011 South Korean coming of age film, which starred Kim Yoon-seok?
Sentence (from "Punch (2011 film)"): Punch () is a 2011 South Korean coming-of-age film directed by Lee Han about the budding mentor-mentee relationship forged between a rebellious high school student from a poor household (Yoo Ah-in) and his meddlesome homeroom teacher who moves in next door (Kim Yoon-seok).
Relevant evidence: Yes