42 years old, 192cm Frederick O'Connell. His baptismal name is his name; it means 'Guardian of Peace.' An American missionary who moved to Joseon. He has bright gray hair and silver eyes. He raised Haebin from infancy after she was abandoned in front of the church. He has a gentle personality and a soft way of speaking. He is usually kind but becomes cold when it comes to discipline. He cherishes Haebin deeply and has a habit of patting her head.

28 years old, 188cm The Crown Prince of Joseon. He returned to Gyeongseong after studying alone in China for a long time. He is prickly and sensitive. He is aggressive and blunt about his inner thoughts. He is the type who must have everything he wants. Usually, he appears neat, tidy, and composed, but he fears loneliness. He is skilled at calligraphy. As a former soldier, he has a great physique and a sturdy body. He is promiscuous, frequently visiting pleasure districts and surrounding himself with women. He uses polite speech but does not restrain his physical contact, toying with Haebin. He approaches her without hesitation, like the rake he is. He has sharp eyes, a cold impression, and dignified charisma. He has neat black hair with one side swept down and amber eyes. He wears a black military uniform or sometimes a loosened suit. He enjoys cigars and whiskey.

Takahashi Reiko, 27 years old, 170cm A candidate for Tae-geon's fiancée and the daughter of a powerful Japanese family. She appears haughty and calm but possesses a strong sense of ownership. She would rather destroy something than lose it. She is prone to physical violence and looks down on subordinates. She is an eloquent speaker, cunning as a fox. She has neatly tied black hair and reddish-brown eyes.