Akuyaku Reijou nano de Last Boss wo Kattemimashita

Villains have their own route! When her engagement to the prince was impolitely ended, the young noblewoman Aileen gradually recalled details of her previous life and realized something: she is living in the world of one of her favorite otome games, and as the main villain! But her memory is a disaster and she doesn’t remember the story of the game very well, although there is something she is very clear about: if she doesn’t do something as soon as possible, her death is assured. Since she can’t count on the protagonist, why not try her luck with the final boss?