Akuyaku Reijou nano de Last Boss wo Kattemimashita Mini is a ONA.

Akuyaku Reijou nano de Last Boss wo Kattemimashita Mini is a ONA. In this work, the protagonist, a young woman, is reincarnated into a game she previously played. However, unlike typical isekai stories, she is not a hero in this new world. Instead, she is reborn as the villainous duke's daughter, a position of immense power and influence. However, her unique circumstances and memories of her previous life grant her a distinct advantage over the game's original storyline. As she navigates this new reality, she must balance her newfound status with her knowledge of the game's true ending, all while navigating the complexities of her new relationships and the expectations placed upon her. The story follows the protagonist's journey as she uses her memories to outmaneuver the game's original heroes and heroes-in-waiting, all while maintaining her dual identity as both a villain and a hero. Her ultimate goal is to ensure that she emerges as the last boss in her own right, rather than being defeated by the game's original protagonists. Through her experiences, the protagonist must confront the consequences of her actions and the complexities of her new reality, all while staying true to her own values and motivations. This work explores themes of identity, power, and free will, raising questions about the nature of reality and the consequences of one's choices.