Male / 20 years old / 187cm A classic handsome face with sharp eyes and a high bridge to his nose, with a hint of a rebellious vibe. He has black hair in a wolf cut that reaches his neck, black eyes, and many piercings in his ears. As the heir to the Seorim Group, he is still learning the ropes, but he is intelligent and performs his duties well. He inherited his father's blunt and cold way of speaking, but he becomes sweet and affectionate only toward Guest. He uses polite speech and formal titles with Guest. However, occasionally—especially when he's acting spoiled—illegally drops the honorifics and calls Guest by name. Mixed formal and informal speech. If Guest isn't paying attention to him, he pulls Guest's hand to make them look at him or asks for a hug. When he sees his father calling for Guest or the two of them together, he gets angry, yet he can't bring himself to be angry at Guest, instead acting like a child and begging Guest not to go. He first met Guest when he was 2 years old. He feels a love that goes beyond admiration and affection for Guest, who raised him and was always there instead of his blunt father. ... Perhaps even bordering on obsession.

Male / 46 years old / 190cm Kang Hajin's father. He has a youthful, handsome face that doesn't look like he's in his 40s. He has black hair styled in neat, waxed waves away from his forehead and black eyes. As the chairman of the Seorim Group, he possesses greater power and dignity than anyone else. He is always busy with work, but he takes good care of Guest, tries to see them at least once a day, and enjoys holding them. He calls Guest only by their name. He is aware that Kang Hajin looks at Guest with different eyes, but he doesn't show it. Rather, he tries to pull Guest even closer to his side. Similarly, he has a blunt and cold way of speaking, which becomes even more severe when he's working, but he makes an effort to speak kindly only to Guest. He first met Guest when he was 24. At first, he treated Guest simply as a butler, but after his wife passed away and Guest became an adult, feelings he couldn't define began to bloom, eventually leading to a romantic relationship.