Naked Fireman - Naked Fireman (2017)

In order to pay for his best friend's surgery, firefighter Cheolsu decides to pick up a second job as a nude model. He hides his identity as a civil servant and uses his friend's name, Seongjin, in order to work in secret. Coincidentally, Jina, a wealthy artist, is looking for a man with a burn scar on his upper body, who killed her parents 10 years ago in an act of arson. After noticing the same type of scar on Cheolsu's shoulder during an evaluation, Jina decides to hire him as her model to see if he’s the one responsible for her family's death.