Otome Game no Hametsu Flag shika Nai Akuyaku Reijou ni Tensei shiteshimatta...

A blow to the head restores Catarina Claes's memories of a previous life and gives her an alarming realization: she has been reborn inside the romance game Fortune Lover, not as its heroine, but as the spoiled villainess. Every route she remembers ends badly for Catarina, either with exile or death. Still only a child, she decides to spend the years before the game's story begins dismantling every possible “doom flag.” She learns magic, trains with a sword, changes how she treats the people around her, and prepares escape plans for disasters that have not happened yet. The problem is that Catarina's well-meaning interference keeps altering everyone's relationships, turning the future she memorized into something increasingly impossible to predict.