My Sister the Heroine, and I the Villainess

My Sister the Heroine, and I the Villainess is a captivating Japanese web novel that delves into the fantasy, romance, shoujo, and slice of life genres. The story follows Christina, the duke's daughter, who rediscovers memories of her past life upon meeting her adopted younger sister, Mishuli. Despite learning that Mishuli is the heroine of a certain story where she is mistreated by Christina, the real Christina becomes a devoted sister, willing to sacrifice her own happiness for Mishuli's. As the narrative unfolds, Christina faces a dilemma where she must choose between altering the predetermined story's tragic end for Mishuli's sake or adhering to fate. This tale of sisterly love and sacrifice explores themes of age progression, aristocracy, arranged marriage, and the complexities of sibling relationships, making it a compelling read for fans of otome games and yandere characters.