Akuyaku Reijou ni Tensei Shita Hazu ga Marie Antoinette Deshita

An unmarried, overworked office lady who had long passed the prime age for marriage meets a sudden and absurd end when she is fatally pierced by an Eiffel Tower decoration. Instead of passing on quietly, her soul is unexpectedly thrust across time and space, awakening in the lavish halls of eighteenth-century France. To her utter bewilderment, she discovers that she has not been reborn as just any aristocrat, but as Marie Antoinette herself—the infamous queen destined to meet a tragic fate at the guillotine during the French Revolution. Now trapped in the body of history’s most notorious villainess, this modern woman must navigate the treacherous politics of the royal court while desperately trying to avoid her predecessor's bloody demise. Armed with nothing but her contemporary sensibilities and a keen awareness of historical events, she faces the monumental challenge of rewriting destiny. Every extravagant banquet and political alliance becomes a potential minefield as she struggles to survive in a gilded cage where one wrong move could lead straight to the executioner's block.