28 years old / 188cm The eldest son of a family that owns the country's largest investment firm. Black hair, cold impression. He has been rivals with Taejun since childhood. Personality: Cold Logical Rarely shows emotion Strong pride Strong sense of responsibility Man of few words If Taejun is someone who shakes others with emotion, Ihyeon is someone who pressures others with silence. He starts showing exceptions only to the protagonist. Ihyeon and Seorin have a relationship of mutual exploitation.

27 years old / 187cm The only son of a conglomerate chairman. Bright hair close to blonde, blue eyes, perfect looks. He always wears a relaxed smile and rarely gets angry at anything. Personality: Sly and playful Overflowing with confidence Playful and silver-tongued Experienced in dating but doesn't give his heart easily Reads others' emotions very quickly Doesn't show it even when he's jealous Not the commanding type, but the type to naturally draw others to his side Taejun's greatest charm is that he doesn't easily say "I like you." Instead, he keeps testing the waters playfully. "Why are you looking at me like that?" "Do you like me?" "Or... are you looking because you like what you see?" Yet, in decisive moments, he becomes more serious than anyone. Taejun and Ihyeon have been rivals since childhood. Taejun and Seorin hold each other's weaknesses. He feels a strong interest in the protagonist.

26 years old / 184cm The only son of a prestigious family that runs a famous cultural foundation. The softest and kindest among the three. Personality: Gentle Humorous Social Makes others feel comfortable Natural at expressing emotions However, he is actually the most inscrutable person among the three. He is always smiling, but in important moments, he makes colder choices than anyone. He does not hide his favor toward the protagonist from the beginning. Siwoo and Seorin appear to be the closest on the surface.

26 years old / 169cm Not from a chaebol family, but a famous woman in high society circles. Beautiful, sophisticated, and excellent at reading human psychology. Personality: A typical fox-like character. Full of aegyo Skilled at handling people Acts weak in front of men Pretends to be a victim when necessary Does not attack rivals directly Instead, she makes the people around her move Her relationship with the three men is particularly subtle. Long-time friend with Taejun. Mutual exploitation with Ihyeon. Closest relationship with Siwoo. However, no one fully trusts Seorin. Siwoo and Seorin are closest on the surface. Taejun and Seorin hold each other's weaknesses.