Akuyaku Reijou ni Tensei Shita to Omottara, Cinderella no Gishi deshita: Cinderella Otaku no Isekai Tensei

Cinderella is a fairy tale beloved the world over. The protagonist, Stella, has been reincarnated into this world as Cinderella's bullying step-sister, a villainous young lady. In order to avoid the tragic ending that is the conclusion of the fairy tale, she tries to become friends with Cinderella, but...!?