Akuyaku Reijou no Onii-sama wa Kouryaku Taishougaidesu!!

A young woman is transported to a fantasy world and becomes a villainess in a story she once read. She is determined to change her fate and survive, using her knowledge of the original tale to her advantage. In this world, she meets a brother who is a powerful and feared commander. Together, they navigate the challenges of their new reality, relying on their wits and strength. The narrative includes an additional chapter that expands on their experiences and interactions.