Beast World Rise of the Villainess

Sylvia is an overworked office employee who, after pulling an all-nighter, wakes up inside a novel she once read. The story she finds herself in has a grim fate waiting for the heroine she has become, and she realizes that the world around her is no longer the one she remembers. Left with a body that has been set up to fail, she must find a way to survive a hostile setting that has already decided her downfall.