He is also well known for several dramas such as Phoenix (2004), Super Rookie (2005) and Another Oh Hae-young (2016).
He was with Top Class Entertainment from 2007 to December 2013.
In an 2015 Instiz discussion post about viewers' favorite drama characters, Mun's Kang Tae-ha Discovery of Romance stays in top 10 at #6.
Mun released Shinhwa's 12th studio album We in 2015.
In 2014, Mun and his manager of 10 years, Lee Jong-hyun, set up a new management agency, E&J Entertainment, for his individual activities.
Mun is also the CEO of Shinhwa Company, the home agency of his group, with Lee Min-woo as co-CEO since 2011, and with the remaining members—Kim Dong-wan, Shin Hye-sung, Jun Jin and Andy Lee—as shareholders. He is the youngest of the three siblings with two older sisters.
Shinhwa broke their previous record with 10 wins (a Triple Crown at Mnet's M! Mun and Shinhwa were on concert tour starting in May 2015, and ended with an Encore concert in Seoul in August.