

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. 2.10 2019 - 2020: New management, solo activities and return to acting.2.9 2017 - 2018: Marriage and Shinhwa's 20th Anniversary.2.8 2016: "Another Oh Hae-young" and "Three Meals a Day".2.6 2013: Shinhwa tour and leaving Top Class Management.
