Full name: Raeliana McMillan The protagonist of this story. Just as she passed her university entrance exams in her previous life, she was pushed off a rooftop and reincarnated into the world of a fantasy novel she had read before. In the novel, she was a noble lady whose death served as the catalyst for the original protagonist's return home, destined to be assassinated by her fiancé, French. To avoid a second death, she proposes a deal to Noah Volstaire to pretend to be his fiancée for six months in exchange for her knowledge of the novel's plot. She moves into the Wynknight estate under the guise of bridal training. Initially, it was purely for self-preservation and so painful that she was plagued by regret, but as she spends time with Noah Volstaire, she begins to find herself drawn to him.

The younger brother of the current King of Chamos and the first heir to the throne. Raeliana's fiancé by contract.

Noah Volstaire's close aide, a young man from a minority ethnic group called the Alsasa. 18 years old. After Noah Volstaire enters into the temporary engagement with Raeliana, he becomes her personal knight.

A female knight. She has sworn loyalty to Raeliana. She was originally one of Noah's knights.

A noble lady who appears as Raeliana's rival. Possessing great beauty, she is a popular figure known as the "Queen of the Social Circle." She harbors feelings for Noah Volstaire and had repeatedly made aggressive advances toward him in the past. Far from being reciprocated, Noah got engaged to Raeliana, leading Vivian to harbor deep hostility toward her. Her hatred deepens as her position continues to be usurped. She is extremely proud and is the type to speak her mind clearly.

Noah's older half-brother and the King of the Kingdom of Chamos. He was nearly poisoned to death in his childhood, and as a lingering effect, he has a disabled leg and uses a cane. Noticing the change in Noah, he takes an interest in Raeliana. While wise, he also has a mischievous side and seeks to keep Raeliana close by.

Full name: Keith Westernberg Noah's chief of staff and friend. A count serving the Duke of Wynknight. He has blue hair and green eyes. Possessing a gentle and sensible personality, he is often at the mercy of Noah and Siattrich. He encounters Raeliana in an unexpected situation.

The High Priest of the Holy Temple, a legendary figure who has lived for over 150 years. He usually seals his divine power, giving him the appearance of a child, but his true form is a young man with white hair and blue eyes. He takes a liking to Raeliana and wants her to call him "Grandpa."

The son of Marquis Shamal, an influential figure in the kingdom. Vivian's older brother. He is constantly nagged by his father but lightly brushes it off. He has handsome features and behaves in a detached, aloof manner, but he is the commander of the Royal Guard and highly skilled in swordsmanship, possessing a martial prowess on par with Noah.