In early 2006, Mun was injured on the set of MBC drama Wolf, resulting in it being pulled off air after four episodes. In December 2005, Mun went to promote Super Rookie in Japan, where he was greeted at the airport by a large crowd. It was commercially successful in Japan when it was broadcast there. Super Rookie was also a big hit in Japan after Fuji TV paid ₩2 billion for the broadcast rights in Japan. It got solid rating in Korea during the broadcast. It was also broadcast on Fuji Television. In 2005, Mun starred in lead role in MBC's Super Rookie with actress Han Ga-in. In early 2004, he appeared in the drama Phoenix (Bulsae).
In 2003 director Park Sung-soo cast him in a supporting role for MBC’s series Breathless (I Run).
In 2002, Mun and his Shinhwa bandmates had cameo appearance in the movie Emergency 19 Act. In 2005, Mun graduated from Dongguk University with a major in Theater and Film.Ĭareer 2004: Acting career beginnings At the time, he thought seriously about giving up and returning to the U.S. He stated that their debut album, Resolver, did not perform well and the band almost disbanded. On March 24, 1998, with the stage name Eric, he debuted as leader and main rapper of group Shinhwa with their single "해결사" (The Solver) on KM Music Tank. In 1996 he returned to Korea and joined SM Entertainment as a trainee and was featured as a rapper on label mate girl group S.E.S.' single " I'm Your Girl" along with Andy. Mun spent his years at Parks Junior High School and Sunny Hills High School, both of which are located in Fullerton, California. When his family moved to the U.S, he went to John Burroughs Middle School located in Los Angeles. He attended Daechi Elementary School located in Seoul. He is the youngest of the three siblings with two older sisters.