Sungjin is a South Korean musician best known as the leader and guitarist of the popular band DAY6. Born on January 15, 1993, he has gained recognition for his songwriting and musical talent. Sungjin's contributions to the band include not only playing guitar but also participating in the creation of many of their songs. In addition to his work with DAY6, Sungjin has a background in music education, having studied at Hanyang University. He is known for his distinctive voice and stage presence, which have helped the band achieve success in the K-pop genre.