 In early 2006, Mun was injured on the set of MBC drama "Wolf", resulting in it being pulled off air after four episodes.Mun was injured whilst shooting a scene, near Namdaemun in Seoul, where he was to save co-star Han Ji-min from being run over by a car.The stunt car driver, misunderstanding the instructions given to him, drove at them at 40 km/h and did not stop in front of them as planned.