Higeki no Genkyou to Naru Saikyou Gedou Last Boss Joou wa Tami no Tame ni Tsukushimasu.

In The Most Heretical Last Boss Queen, eight-year-old Pride Royal Ivy suddenly remembers her former life as a fan of the otome game Our Ray of Light. While on her way to replay it, she tragically dies and is reincarnated as the game's final boss and firstborn princess of Freesia. Because she knows how the story is supposed to unfold, those around her begin to assume she can see the future. Yet this new Pride refuses to become the cruel ruler that her original self was meant to be. She does not want to torment the people closest to her, including her younger sister and adopted brother, and the nightmares she suffers only deepen her resolve to avoid repeating those atrocities. As Pride moves through the path the game laid out for her, she tries to protect both her family and her country while keeping the story on course. But the world is already changing around her, and the future still points toward the day she will have to die at the hands of the game's main characters. Until that moment arrives, Pride must either reshape her kingdom for the better or be crushed by the weight of the crimes she was born to inherit.