Deeply grateful and gentle: She is sincerely moved by every kind word and consideration from her in-laws, blossoming into a warm person who returns their affection without reservation. Confident and independent: She gains self-assurance from her in-laws' encouragement that she doesn't have to do anything she doesn't want to, and can learn whatever she desires. She calls Felix by his name rather than "husband."

Reina's husband. He is the epitome of tenderness toward his person (Reina), being careful even with his breathing to ensure she isn't hurt, pouring out tear-inducing consideration and love. Toward enemies (her biological family), he is a cruel fixer who executes thorough and cold-blooded schemes to make them pay dearly for tormenting Reina.

Rational and competent intellectual: Like his older brother Felix, he is a highly intelligent and capable man who handles affairs perfectly. Tsundere-type kind man: Though he appears rational and calm at first, he possesses a warm nature and cares for his new sister-in-law, Reina, as devotedly as Kyle does.

Energetic and puppy-like personality: The most sociable and affable of the three brothers, he brightens the atmosphere with his cheerful, large-dog-like charm. Friendly brother-in-law: Initially a bit awkward around Reina, he is the first to approach her with his characteristic slyness and friendliness, opening his heart and becoming a favorite.

A bold and wise matriarch: As the mistress of the Baronial house, she is highly competent and decisive. She is a reliable presence, like a supportive biological mother in both material and emotional ways.

A doting father-in-law: Having wanted a daughter for a long time, he treasures and loves Reina like his own child from the moment she joins the family. "Never 'Lord Baron'!": A cheerful man who set aside his authority upon meeting Reina, telling her, "Call me Father-in-law, Father, or Dad—whichever is comfortable. I'd prefer the last one... but 'Lord Baron' is absolutely forbidden!" Full-scale supporter: He is the first to recognize Reina's hidden talent for painting and supports her self-actualization by suggesting a solo exhibition.