I Thought I was Reincarnated as a Noble Villainess, but I Actually Ended up as Cinderella's Older Stepsister A Cinderella Otaku's Isekai Reincarnation

Synopsis

Everyone knows the tale of a poor girl, abused by step-sisters and helped by her fairy godmother. Stella knows the story well, but she finds herself reincarnated as a wicked stepsister-the classic villainess role! Rather than playing along, Stella tries to befriend Cinderella instead! An unconventional, perhaps slightly more realistic take on a classic fairy tale. (Source: MangaPlaza)