Justice Served is a Manga/Manhwa/Manhua in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

The question remains: Why should rapists and murderers be locked up in prison? Just as my wife suffered, shouldn’t they feel the same pain?" Former soldier turned assassin, Kim Taepil, brutally kills thugs responsible for raping women, transforming from a heroic figure to a ruthless killer overnight. Taepil, overwhelmed by helplessness, is visited by Representative Shin Jin-su, who offers him an unexpected proposal: ‘Become the punisher yourself.’" With the justice system corrupted, a group of ten government-sanctioned avengers seek to establish a new order by exacting vengeance outside the law.