K-pop boy band FTISLAND's drummer Minhwan is facing a police investigation for visiting bars that facilitate prostitution, following the disclosure by his ex-wife Yulhee, a former member of girl group LABOUM. On October 25, the Gangnam Police Station in Seoul announced that they are investigating Minhwan and his broker for violations of the Act on the Punishment of Arrangement of Commercial Sex Acts, among other charges. Earlier, in the evening of October 24, Minhwan's ex-wife, Yulhee revealed Minhwan's frequent visits to adult entertainment bars during their marriage in a video posted on her YouTube.

Through this video, Yulhee shared an audio recording of a conversation between Minhwan and his broker, who connects clients with private entertainment bars. In their conversation, Minhwan repeatedly asks for reservations at bars with private rooms where patrons can drink with their chosen female companions, who even undress in front of them and can be touched, all in the middle of the night. Minhwan also inquires about a hotel room at four in the morning, suggesting he may be seeking accommodations for purposes beyond just sleeping.

Since he mentioned Gangnam several times in his conversation with the broker, the case is being investigated by the Gangnam Police Station. After Yulhee's revelation, someone filed a complaint with the National Police Agency, accusing Minhwan and the broker of violating the Act on the Punishment of Arrangement of Commercial Sex Acts. The complainant .