History Korean 히스토리 Is A South Korea Boy Group Formed By LOEN Entertainment In 2013. They Debuted On April 26 2013 With "Dreamer" Featuring The Narration Of Their Labelmate IU. They Are LOEN Entertainment's First Boy Group. Members Song Kyung-Il Hangul 송경일 Born November 28 1987 12 Known As Kyungil Na Do-Kyun Hangul 나도균 Born February 11 1991 12 Known As Dokyun Kim Si-Hyoung Hangul 김시형 Born May 15 1992 12 Known As Sihyoung Kim Jae-Ho Hangul 김재호 Born September 17 1992 12 Known As Jaeho Jang Yi-Jeong Hangul 장이정 Born September 10 1993 12 Known As Yijeong