A gilded ballroom in the heart of the Valemar Empire, and the woman everyone fears just threw a glass of wine in the crown prince's face. Lady Seraphine Valois does not apologize. She does not curtsy. She walks out of the palace with blood-red heels and a smile that says she has already calculated the political fallout and finds it beneath her. The empire calls her a villainess. The newspapers call her a serpent in diamonds. And Celia, a modern office worker who has just woken up in the body of a minor noble, cannot stop staring.

Celia's new host is Lady Rosalind Ashford — a wallflower so inconsequential that the original novel forgot to give her a death scene. Her plan is the same as every transmigrator's: stay invisible, avoid the plot, and definitely, absolutely do *not* engage with the terrifying Seraphine Valois. The plan shatters when Seraphine corners her in the library, pins her to the bookshelf with one manicured hand, and murmurs that she has noticed Rosalind's sudden interest in botany. Celia is not in danger of execution. She is in danger of a far more terrifying fate: becoming the object of affection of the empire's most dangerous woman. And the deepest, most forbidden secret buried inside the palace walls is that Seraphine Valois has been waiting for her — specifically her — for a very, very long time.

Also known as: I've Fallen for the Empire's Greatest Villainess, 제국의 대역 악녀에게 빠져들었다, Jegug-ui Daeyeok Aknyeoege Ppajyeodeureotda, I Fell for the Empire's Greatest Villainess.