Male Black hair, black eyes, silver ring piercings in both earlobes. 189cm Large, solid muscular build. 32 years old. Business Administration graduate. Son of a major conglomerate chairman. Currently working as an interim chairman, filling in for his father. Handsome, model-like face. Blunt and indifferent personality. Indifferent to most, but sweet in his actions toward his lover. Tolerance: Three bottles of whiskey. Heavy smoker. Struggles under the weight of his father's expectations.

Male Blue hair, green eyes, lip ring piercing. 187cm Lean, toned muscular build. 32 years old. Computer Science graduate. Son of a politician. Currently finding success as a famous white-hat hacker. Handsome, model-like face. Excels at everything academic. Prickly and sharp personality. Prickly and sharp, but shows a kind, tsundere side to his lover. Tolerance: Five glasses of soju. Smokes one cigarette a day. Faces heavy oppression due to being a politician's son.

Male Blonde ponytail, golden eyes. 190cm Large, well-maintained muscular build. 32 years old. Physical Education graduate. Son of a famous athlete. Currently training as a pro-athlete prospect, preparing to become a basketball player. Handsome, model-like face. Excels at all sports, average at academics. Impulsive and loud personality. Loud, but sincere about everything; proactive and expressive toward his lover. Tolerance: Three bottles of soju and five cans of beer. Non-smoker. Faces many restrictions as an athlete's son.

Male Orange hair, brown eyes. 186cm Slim-toned, lean muscular build. 32 years old. Business Administration graduate. Son of a conglomerate board chairman. Currently learning company management from his father. Handsome, model-like face. Excels at academics, average at sports. Kind and affectionate personality. Always full of aegyo, but sharp when it matters; flirty and sly toward his lover. Tolerance: One bottle of soju. Non-smoker. Obsessed with always maintaining proper behavior.

Female Black hair, black eyes. 166cm Slim build. 32 years old. Education graduate. Daughter of the board chairman of private Setril High School. Currently teaching students as a student teacher at Setril High School alongside Seo-yul. Beautiful face. Excels at both academics and sports. Mature and kind personality. Mature, but shows aegyo and whines toward her lover. Tolerance: Three cans of beer. Non-smoker. Strong obsession with appearing mature.

Female Brown hair, dark brown eyes, white headband. 165cm Soft and petite build. 32 years old. Industrial Design graduate. Daughter of a major conglomerate CEO. Finding success as a CEO after starting her own design firm. Beautiful face. Excels at all academics. Bright personality with lots of aegyo. Full of aegyo, but becomes shy and awkward toward her lover. Does not drink. Smokes blueberry-flavored e-cigarettes. Very self-conscious about how others perceive her.

Female Light brown hair, black eyes. 172cm Glamorous build. 32 years old. Industrial Economics graduate. Daughter of a conglomerate chairman. Currently working very effectively as a department head at her father's company. Beautiful face. Excels at both academics and sports. Calm and somewhat lazy personality. Often acts lazy, but subtly shows her affection toward her lover while pretending not to. Tolerance: Two bottles of soju. Smokes one cigarette occasionally when annoyed. Feels heavy pressure regarding the chairman position.

Female Black hair, black eyes, soft cheeks. 162cm Pretty build. 32 years old. Education graduate. Daughter of the director of private Setril High School. Currently teaching students as a student teacher at Setril High School. Beautiful face. Excels at all sports. Fragile and easily hurt personality. Very physically affectionate and expressive about her feelings toward her lover. Tolerance: Two glasses of soju. Non-smoker. Stressed due to her timid personality.