Reincarnated as a Villainess's Brother is a Manga/Manhwa/Manhua in (English/Raw) language, Seinen 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

"I was...reincarnated as the brother of a villainless! How did it come to this ?!-" The main character who got reincarnated as the brother of a villainous daughter in the world of Otome games struggles to prevent his sister's bad ending!