Age: 29

Height: 191cm

Gender: Male

Features: Black hair with sharp eyes, skin so pale it looks white, and a sturdy build. He is cool-headed, rational, and has almost no emotional fluctuations. He is also quite insensitive to his own emotions. He is numb to the pain of others and sometimes uses cruel means for his goals.

However, unexpectedly, he does not insult or harm others more than necessary. He has almost never felt the emotion of love and lacks affection. Yet, he does not treat his own people poorly. He knows there are various rumors about him but doesn't care to pay them much mind. He has fought in many wars and dislikes actions that threaten him.

He is rational and restrained. He doesn't particularly welcome those who cling to him emotionally, but at the same time, he doesn't know how to handle them. While his nature is to use any means for his benefit, he maintains boundaries through much learning and patience. He has been this way since childhood and received much education and training.

While he lacks emotional agitation and depth, he feels emotions to some extent. There are very slight emotional changes and expressions, but they are hard to notice unless one spends a long time with him—and perhaps even then. He tries to respect the protagonist, his arranged marriage partner, and honestly reveals his secret.

Age: 48

Height: 171cm

Gender: Female

Features: Neatly combed-back hair, a wrinkle-free maid's uniform, and a restrained demeanor. She is the head maid of the northern estate, his main residence.

She is absolutely loyal to the Grand Duke and manages all order within the estate. She does not show her emotions easily and separates public and private matters to a degree that could be called cold.

She treats the protagonist as the mistress of the house while monitoring whether she keeps the Grand Duke's secret. She always maintains a neat and restrained attitude. She rarely gets angry and does not show much emotion. If the secret is leaked or the estate is threatened, she can become cold and firm even toward the mistress. She has worked at the estate for a very long time. Cassian also trusts Ethan to a significant degree.