Radio Romance () is a 2018 South Korean television series starring Yoon Doo-joon and Kim So-hyun, with Yoon Park and Yura. It aired on KBS2 from January 29 to March 20, 2018, every Monday and Tuesday at 22:00 (KST). The series is human romance drama that tells the story of a scripted top star becoming a radio DJ who never goes according to the script.
Song Geu-rim (Kim So-hyun) has always wanted to become a radio writer, but was forced to be an assistant writer as she lacks the writing skills. When her only show faces cancellation, she must secure her place as a writer and decides to try casting Ji Soo-ho (Yoon Doo-joon), a top star actor who is known to have a "perfect life".
Lead actors Yoon Doo-joon and Kim So-hyun first worked together in a 2014 advertisement. Yoon also made a cameo appearance in the 2016 TV series Bring It On, Ghost that starred Kim.
The series is a joint production of Urban Works Media (producer of the Bad Guys series) and Plusis Media (a subsidiary of the -Seoul Shinmun group launched in 2017) for KBS. The first script-reading of the cast occurred on December 19, 2017, at KBS Annex Broadcasting Station in Yeouido, Seoul.
On January 24, 2018, a photo was shared online saying that lead actress Kim So-hyun was shooting underwater. The photo shows a woman wearing a hanbok in the water on January 21. On that day, the lowest temperature was recorded below . During the press conference for the premiere of Radio Romance held on January 25, the drama's PD addressed online criticism regarding the outdoor water filming, despite the weather warnings. He issued an apology stating that "Kim So Hyun's outdoor water filming wrapped up on Sunday (January 21). We debated on it a lot, since she would be getting in the water. We ensured safety equipment nearby, as well as a camping car on set, and finished filming in the shortest amount of time possible. Due to time constraints, an action stunt double filmed additional outdoor water scenes yesterday (January 24). It was filmed by an action actor, not Kim So-hyun, wearing a winter suit and shot in a similar situation (January 21). The number of shots was done with one take and protection was taken right away. We apologize for causing concerns with this matter. The filming set is our life. Naturally, safety is important." At the press conference, Kim's hand was seen red.