The crime action flick "Master" took only 17 days from its release to garner 6 million viewers.
The film opened on December to much fanfare due to its star-studded cast, including Lee Byug-hun, Kang Dong-won and Kim Woo-bin.
It reached the 1 million mark in three days, which is faster than any previous December release.
Meanwhile, director Jo Eui-suk and actors Kang Dong-won and Kim Woo-bin shared a picture in celebration of the film's 6 million mark.
"Master" continues to dominate the box office with attractive story and characters.