Naked Fireman (2017)

Kang Chul Soo (Lee Joon Hyuk) is an enthusiastic fireman. He poses as a nude model to make money for his sick friend. He is then targeted as the criminal of an arson-murder case that took place 10 years. Kang Chul Soo and mysterious heiress Han Jin Ah (Jung In Sun) try to find the real culprit.