그래서 아내는 누가 죽인 건데

The wife he thought was ordinary turns out to be a killer?! One day, Lee Man discovers his wife's affair and, convinced she's plotting to kill him, attempts to kill her first. However, Lee Man witnesses her murder at the hands of a man and becomes the target for killers... Hired to protect Lee Man, the killer "Movie Gwang" must find her killer to survive and to learn about his "real" wife! A spectacular revenge action thriller about two newlyweds! (Source: KakaoPage, translated) Note: Includes one extra chapter.