Hyunsik is a South Korean singer, songwriter, and member of the boy group BTOB, which debuted in 2012 under CUBE Entertainment. He is known for his powerful vocals and has contributed to many of the group's songs, showcasing his talent in both singing and songwriting. In addition to his work with BTOB, Hyunsik has pursued solo projects, releasing music that highlights his artistic style. He has also participated in various television programs, further increasing his popularity and allowing fans to connect with him on a personal level.