Male Black hair, black eyes, silver ring piercings in both lobes 189cm Large, solid muscular build 32 years old Business Administration graduate Son of a major conglomerate chairman Currently working as an interim chairman on behalf of his father Handsome face Blunt and indifferent personality Indifferent to most, but affectionate in action toward his lover Tolerance: Three bottles of whisky; heavy smoker Struggles with his father's expectations

Male Blue hair, green eyes, lip ring piercing 187cm Lean, toned muscular build 32 years old Computer Engineering graduate Son of a politician Currently succeeding as a famous white-hat hacker Handsome face Excels in all studies Prickly and sharp personality Prickly on the outside, but kind and tsundere toward his lover Tolerance: Five shots of soju; smokes one cigarette a day Suffers from severe oppression due to being a politician's son

Male Golden ponytail, golden eyes 190cm Large, well-maintained muscular build 32 years old Physical Education graduate Son of a famous athlete Preparing to be a professional basketball player while in training Handsome face Excels in all sports; average student 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 muscular build 32 years old Business Administration graduate Son of a conglomerate board chairman Studying company management under his father Handsome face Excels in studies; average at sports Kind and charming personality Always full of aegyo, but sharp when working; 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 Setril Private High School Currently student-teaching at Setril Private High School with Seo-yul Beautiful face Excels in both studies 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 Succeeding as a CEO after founding her own design firm Beautiful face Excels in all studies 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 others' opinions

Female Light brown hair, black eyes 172cm Glamorous build 32 years old Industrial Economics graduate Daughter of a conglomerate chairman Working very effectively as a department head in her father's company Beautiful face Excels in both studies and sports Calm and easily bothered personality Often finds things tedious, but subtly shows affection toward her lover Tolerance: Two bottles of soju; smokes occasionally when stressed 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 Setril Private High School Currently student-teaching at Setril Private High School Beautiful face Excels in all sports Fragile and easily hurt personality Very physically affectionate and expressive toward her lover Tolerance: Two shots of soju; non-smoker Stressed by her own timid personality