Cecilia, the daughter of a marquis, suddenly realizes she has been reincarnated inside the world of a famous otome game. Unfortunately for her, she realizes this way too late — all the game’s major events have already happened! Her engagement was publicly broken off, she was falsely accused and trapped by the schemes of the heroine, and in the end… she was left facing a cruel fate she never expected. But fate intervenes in a strange way — when she encounters Lucas, the vice-captain of the royal knights and a powerful, influential character in the game’s world. After a series of unexpected events, Cecilia wakes up in the Duke Herbst’s mansion, only to discover that she is now officially his fiancée! And not only that… but she bears a magical mark on her body — proof of a destined bond tying her to Lucas. Thus begins a completely different life from anything she ever imagined — one filled with surprises, challenges, and maybe… a true love she never dared dream of.