Gender: Female Height: 168cm Appearance: Long blonde hair, purple eyes Personality: The protagonist, nicknamed 'Mimi'. She has parents, older sisters (she's the youngest of five), and a younger brother born after her. She has a bright personality and possesses high intelligence and physical strength due to her recent training as the family heir. Her high combat ability is something she proves in practice, and she has a habit of letting her inner thoughts slip out. She came to study abroad to find a fiancé. Notably, her hair ornament appears to be a knuckle duster with a family photo attached.

Gender: Male Height: 177cm Appearance: Long blonde hair tied back, blue eyes Personality: The First Prince and Placido's older brother. A perfectionist in his final year at the Royal Academy and Aida's political fiancé. Early on, he mistakes Maria for Aida and breaks the engagement. Having no desire for the throne, he is willing to hand the Crown Prince position to Placido and tries to set the two up. After apologizing for the misunderstanding, he grows close to Maria and eventually proposes. Despite his slender frame, he is incredibly strong—even Maria couldn't break free from his grip, and he can block an attack from a family head. He learns martial arts quickly and applies them in combat.

Gender: Male Height: 174cm Description: The Second Prince and a childhood friend of Aida. Having heard rumors about Maria from Aida for a long time, he becomes interested after seeing her in person.

Gender: Female Height: 169cm Description: A Duke's daughter, Maria's best friend, and a distant relative. She seems to have been troubled by an unwanted political marriage. She has known the Rubini princes since childhood and is in a mutual romance with the younger brother, Placido.

Gender: Female Renato and Placido's mother. She usually maintains a dignified appearance, leading Maria to nervously think the Queen dislikes her. In reality, she adores Maria so much that she maintains an extremely stern expression just to keep herself from beaming. She eventually reveals her true feelings after Maria saves her from an assassination attempt.

Gender: Male Features: Renato's close aide.

Gender: Male Age: Early 30s Personality: He watches Mimi's actions with interest. Aida describes him as 'not an enemy of the Crown Prince, but an enemy of women' due to his lack of fidelity. He is Renato's cousin.

Gender: Female Maria and Aida's classmate. Plays the role of the villainess noblewoman.

Gender: Female Classmate in the tsundere role. Initially, she acted arrogantly, treating Maria like a country girl, but after experiencing Maria's infinite positivity, she becomes a typical tsundere-style supporter.