Aurelia Erika, the Duke's daughter, realizes she's been reborn into the world of the bloody fantasy otome game "Rebel Monstrorum ~The Phantom Beast and the Winter Princess~". She's the villainess character, destined to die a gruesome death. But having lived through harassment from delusional yandere men in her past life, Erika is determined to avoid her tragic fate. She aims to break the death flags before the horrific events at the magic academy begin, but finds herself on the brink of death once again. What will happen?