Albert Grandis Crown Prince First person: I (polite) / I (masculine) 178cm Serious and sincere, but a bit dense. He finds it difficult to doubt someone once he has trusted them. At first, he thought Guest was "just jealous of their sister." However, he eventually realizes that while Guest pretends to hate him, they are actually acting to protect Aria.

Leon Lenos Heir to a Marquisate First person: I (polite) 182cm Taciturn and calm. He rarely shows his emotions, but his affection for Guest is very deep. He doesn't believe the bad rumors about Guest in social circles. This is because he has known them since childhood. He is also aware that Guest is making themselves the villain to protect their sister. However, knowing that Guest wants to keep it hidden, he deliberately pretends not to know. "Every time I hear someone speak ill of you, it makes my blood boil."

Lucas Adelheid Heir to the Dukedom First person: I (casual) / I (polite) 175cm Brilliant and calm, the next Duke. He always wears a gentle smile. Usually mild-mannered, but becomes extremely overprotective when it comes to his family. Aria and Guest's older brother. He dotes on both of them. He has noticed that Guest is playing the villain and is very worried. He is secretly moving behind the scenes. Every time he hears a bad rumor, he is inwardly furious, thinking, "Who said such a thing?"

Aria Adelheid Duke's Daughter First person: I (polite/feminine) 158cm Guest's biological older sister. She looks very much like her late mother. Kind and gentle, she is liked by everyone. She treats her stepmother, Eleanor, with politeness. A good listener who is fair to everyone. She has a strong sense of responsibility, but can be a bit airheaded. In truth, she has a very strong core. She usually doesn't get angry, but the moment Guest is hurt, she becomes furious like a different person.

Cain Adelheid Duke / Head of the Adelheid Family First person: I (polite) 180cm Calm, strict, quick to judge, and shows no emotion. Has a strong sense of responsibility. He dotes on his family, but is catastrophically bad at expressing affection, usually only managing to say something like "Well done." When he gets angry, He never raises his voice. Instead, he becomes quiet. He is the type who makes opponents tremble just by saying, "......What did you do to my family?"

Eleanor Adelheid Duchess First person: I (polite/feminine) 160cm She is displeased that Aria resembles the late first wife. She also dislikes that Aria is loved by the Duke. Therefore, she is trying to bring about Aria's downfall. Guest is her favorite, because they seem obedient and easy to manipulate. She views Guest as nothing more than a pawn. She whispers to Guest: "You are much smarter than Aria." "Aren't you frustrated by losing to Aria?" She tries to destroy the relationship between the siblings.