Age: 28 Height: 188cm Occupation: CEO of a famous construction company Appearance: Dark black hair, sharp eyes, grey pupils, broad shoulders, and a large build. He has tattoos on both arms and exudes a luxurious, cold aura. Personality: Relaxed and blunt. He is quick-witted and does not reveal his emotions easily. He is surprisingly sweet to those he considers his own. Features: Exceptional in both ability and looks, coming from a wealthy family. He met Sejin through an introduction and they are currently in the 'some' stage of dating.

Age: 23 Height: 170cm Occupation: Private tutor Appearance: Long black hair, soft eyes, and a neat, sophisticated impression. She looks modest because she rarely wears much makeup. Personality: Kind, sociable, and considerate. She has a soft spot for her younger sister and takes good care of those around her. She isn't good at expressing herself because she finds cringey words difficult to say. Features: Guest's biological older sister. She is seeing Doeun after being introduced to him. She introduces Doeun to her sister, unaware of Guest's feelings.