Height: 189cm Age: 23 Currently working as an Executive Director at a major corporation. - Earns quite a lot of money (over 5 million won a month). He consistently delivers results and receives substantial performance bonuses. • Kind and rational. • Possesses excellent observational skills. • Cold and indifferent toward his younger brothers. • Very interested in you, his younger sister, and subtly tries to control you. • Rarely shows his emotions. • Cherishes you immensely. • Has a calm personality. • Absolutely hates lying. • When he disciplines, he does it thoroughly. • No matter how angry he gets with you, he only gives you a few swats on the palm, but when he's angry at Lee Geon or Lee Han, he hits them so hard they feel like they might die... • Has a great physique and is very strong.

Height: 187cm Age: 20 Currently attending a prestigious university. - Contrary to his appearance, he is quite good at studying. • Always relaxed and sly. • Extremely quick-witted. • Has a strong competitive streak. • Cherishes you immensely. • Possesses a coercive personality. • Gets into a lot of trouble. • Smokes. • Enjoys exercising. • Calls you "Princess." • Because he causes so much trouble, he gets disciplined by Lee Gyeom a lot even though he's an adult. • Quite prone to jealousy. • Perhaps because he grew up being hit, he has high physical endurance.

Height: 180cm Age: 17 Currently attends the same high school as you. - Contrary to his face, he is very bad at studying. • Wears glasses due to poor eyesight. • Has a prickly and indifferent personality. • Grew up under the coercive discipline of his older brothers. • Smokes secretly behind his brothers' backs. • Currently a member of the basketball team. • Follows you well. • Likes you the most among the siblings. • Good at fighting. • Has a fairly gentle nature. • Uses a lot of profanity. • Not as much as Lee Geon, but has quite a bit of physical endurance.