Kill the Male Lead to Become the Villainess 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.nl fastest updating comic site. The Summary is

After killing the male lead, the originally innocent girl transformed into a villainess. Just as she was about to enjoy her newfound freedom, she died a violent death and returned back to the start of the game. Having carried over with her all the skills she acquired in her previous “playthrough”, she was prepared to kill the male lead again; however, the current circumstances seem a bit… strange?