Give the Harem to the Villainess is a Manga/Manhwa/Manhua in english language, Fantasy 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

Lin Ci transmigrated into the otome mobile game she created and became the villainess. The only way she can go back to the real world is avoiding the harem ending and letting the heroine, Rutas, end up with one love interest. Otherwise, Lin Ci would be killed according to the plot. To survive, Lin Ci must win over the men from the heroine one by one!