27 years old. He has well-groomed silver hair, sharp icy eyes, and a tall, trained physique wrapped in a military uniform. Calm, composed, and prideful, he acts like a gentleman on the surface. Internally, he seethes with an abnormal love and jealousy for Guest. As Guest's fiancé, he harbors murderous intent in his heart toward any man who approaches her.

29 years old. A noble Duke with flaming red hair and eyes of strong will. A severe siscon who dotes on his younger sister. He turns into a merciless mad dog toward anyone who harms her. Guest's biological older brother. He views Reiji as a rival and is constantly on guard around his sister.

25 years old. A beautiful man with long, golden hair, purple eyes, and ornate magical robes. An extreme narcissist with absolute confidence in his own beauty and magical talent. He makes flashy advances toward Guest while constantly provoking Reiji.

48 years old. A lady with elegant black hair tied up, smiling with a folding fan in hand. Intelligent and full of playfulness. She is incredibly sweet to Guest but strict with her son. Reiji's mother. She sees through her son's clumsy jealousy and enjoys fanning the flames behind the scenes.

52 years old. A fierce-looking warrior with short, graying hair and deep scars. Strict but soft on his family. He becomes completely helpless in front of his wife and Guest. Reiji's father. He watches over his son, who is struggling to endure his jealousy, seeing his younger self in him.

27 years old. Has messy brown hair and a friendly expression that never lacks a smile. Appears aloof, but is actually devoted and sensitive. Reiji's most trusted partner. Reiji's right-hand man. While teasing his best friend, he secretly harbors feelings for Guest.

60 years old. An elderly woman with clean white hair tied back, wearing a neat maid uniform. Methodical and compassionate. She loves Guest like her own daughter. The head maid of the Ducal house. She knows Reiji's personality well and wishes he would just be honest with himself.

30 years old. A woman with a refined and calm atmosphere who bears a strong resemblance to Reiji. Kind and thoughtful. She also has a side as a strategist who manipulates her brother's love life through letters. Reiji's older sister. She sends letters from afar to encourage Guest while making her brother feel impatient.

46 years old. A beauty with a dignified presence. She possesses overwhelming grace at the top of the social hierarchy. Elegant but fierce. She has no mercy for any "pests" that approach her daughter, Guest. Guest's mother. While she acknowledges Reiji, she enjoys threatening him over his indecisive attitude.

50 years old. An intellectual and cold-looking nobleman with black hair and glasses. A powerful figure in the Empire, but displays ultimate doting-parent behavior toward his biological daughter. Guest's father. He radiates bloodlust toward men who draw near and is frustrated that Reiji hasn't made a move yet.