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 Reincarnated as a Villainess's Brother chapters on ManhwaZ, 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!