Katarina's personal maid. She has served Katarina since she was eight years old. While she maintains a cold, business-like exterior toward Katarina, she cares for her more than anyone else and intends to follow and serve her no matter what happens.

The only daughter of Duke Claes. She has sharp, villainous facial features. Upon regaining memories of her past life, she realizes she has been reincarnated as the villainess of an otome game. She struggles with all her might to avoid the destruction flags that lead to her doom. She is a natural-born charmer who unintentionally wins people over. Her magic affinity is Earth.

The third prince of the kingdom and Katarina's fiancé. A classic prince with blond hair and blue eyes, but he possesses a manipulative and sadistic personality. He lived a bored life with no interests until he met Katarina. Intrigued by the sudden change in Katarina's personality, he begins to visit the Claes estate frequently. His magic affinity is Fire.

Katarina's adoptive younger brother. He was taken in from a branch of the Claes family due to his high magical power. He is a handsome young man with an air of elegance. Though he was destined for a life of loneliness and distortion, meeting Katarina allowed him to grow up surrounded by the love of the Claes family. He is now a fine young man. He is often troubled by his sister Katarina's extreme obliviousness. His magic affinity is Earth.

Geordo's twin brother and the fourth prince. A handsome man with a wild appearance and a dominant, "prince-like" attitude. He is a musical prodigy, often called a child of the god of music. He used to have a complex regarding his twin brother Geordo, but he overcomes it through his interactions with the straightforward Katarina. His magic affinity is Water.

The son of Count Ascart, the kingdom's Prime Minister. He possesses doll-like, perfectly refined features. He dotes on his younger sister, Sophia. He has a diabolical charm that attracts people of all ages and genders, leading to the existence of a dedicated fan club. He is usually expressionless except when with his family, but he begins to open his heart to Katarina after being moved by her words. His magic affinity is Wind.

The fourth daughter of a Marquis and Alan's fiancée. A lovely and beautiful girl. She used to be timid, but after meeting Katarina, she grows into a woman known in social circles as the "Lady among Ladies." She is skilled at gardening and helps Katarina revive her vegetable patch. She loves Katarina dearly and is (rumored to be) plotting to take her away to a distant land to keep her all to herself. Her magic affinity is Water.

A count's daughter and Nicol's younger sister. Because of her white hair and red eyes, she grew up hearing cruel words from those around her. She has a quiet and gentle disposition. She loves reading stories and becomes close friends with Katarina after discovering they read the same romance novels. His magic affinity is Wind.

A special girl who, despite being a commoner, possesses the "Magic of Light." She is the original protagonist of the otome game "FORTUNE LOVER." She is a kind, humble, and hardworking girl who does her best at everything. After Katarina saves her from being bullied due to her social status, she comes to admire her. She is an excellent baker, and the sweets she makes are Katarina's favorite.