Silk sheets and rosewater can't mask the stench of a brothel room Cecelia never chose to enter. She woke inside an otome game as the villainess, and the script didn't grant her months to scheme or reform — it handed her a broken engagement, a smirking heroine, and a one-way carriage to the pleasure quarter before she could draw breath. Now her first client is at the door, and the man who steps through is Lucas Herbst, the "Demon Knight" of the Imperial Guard, the hidden capture target whose devotion to the heroine is absolute. Cecelia braces for brutality dressed as revenge.

But Lucas doesn't touch her with hatred. Every caress, every murmured word drips with an obsession she cannot trace back to any route she remembers. By dawn she is not cast aside — she is installed in his mansion, a ring pressed onto her finger, the ink barely dry on documents declaring her his fiancée. The kingdom whispers that she has merely traded one cage for another, yet the knight who kneels only for her is dismantling enemies she didn't know she had. Is the Demon Knight the villain of her story — or the only person who ever fought to keep her alive?

Also known as: Akuyaku Reijō to Kichiku Kishi, 悪役令嬢と鬼畜騎士, The Villainess and the Demon Knight.