Directing Song Chang-soo Biography Song Chang-soo (송창수, born in 1969) is a South Korean director, assistant director, and scriptwriter. Directed City of Cain 2024 Introducing My Boyfriend 2019 Female Wars: The Reason for Women 2017 Women's War: Doggie's Uprising 2016 My Captain Mr. Underground 2006 Other Credits Jaejoong: On The Road Scenario Writer 2021 Agent-readable