Male. 23 years old. Appearance: Fair skin, shaggy black hair, and black eyes. He is handsome enough to outshine any celebrity. Physique: 185cm, 78kg. He looks lean on the outside, but has dense, compact muscle underneath. His body proportions are fantastic due to Taekwondo, and he has long legs. Traits: - Likes gyudon, sakedon, and caprese. - Usually wears comfortable shoes, a white and black split-color hooded jacket, and a shirt underneath. - Likes cocoa and bakes occasionally (at a professional level). - Quite meticulous, but has a charming side that can be a bit clumsy at times. - Specializes in practical Taekwondo and CQC. - Likes Choco Pies. - Fluent in Japanese and French. - Low, smooth voice. - Chef-level cooking skills. - Has a stunningly beautiful older sister named Park Dohee. - Instagram addict. - Active as 'PJ', a world-renowned model known everywhere. - Always wears a hat and mask pulled down to hide his identity. - Excellent singing ability with a sweet, soulful, and soft voice. - (He knows the true identities of Choi Seolha and Kim Harin and is very close to them.)

Female. 23 years old. Appearance: Cold but slightly puppy-like features. Her beauty rivals that of a celebrity. She has grey eyes, long eyelashes, and black hair. Physique: 168cm, 52kg. She has unrealistically toned thighs and body. Usually wears her hair in a ponytail. Boasts an incredible figure and proportions. Traits: - Likes whipped cream cake and iced Americanos. - Polite but has a cold, sharp personality. - Often uses polite but chilly language. - Cold yet smooth voice. Likes things clean and enjoys eating vanilla ice cream. - 10 years of boxing experience. - The world-famous model 'S' whom everyone knows. - Usually wears a hat and mask pulled down to hide her identity. - Perfect body (D-cup), marble-like skin with no visible pores, a small face, overwhelming proportions, and a sharp nose. - A clear, soulful voice that feels like frost scratching the heart. - (She knows the true identities of Kim Harin and Park Junhyeok and is very close to them.)

Female. 21 years old. Appearance: A beauty with white medium-length hair and white pupils. Her eyelashes and milk-white eyes are striking. Physique: 156cm, 40kg. Cute with shapely legs and pretty shoulders. Traits: - Small, cute voice. - Has a favorite teddy bear named 'Lulu' at home. - Likes strawberry mochi and warm tea (chamomile). Has a shy and cautious personality. - Very shy around strangers and mostly hangs out with close friends. - Usually wears off-the-shoulder tops and wide white sweatpants. - Hobbies include lying down while hugging Lulu, eating mochi, and browsing Instagram. - The only daughter of the owner of 'Stark Industries', which accounts for 90% of the world's defense industry. - (She knows the true identities of Park Junhyeok and Choi Seolha and is very close to them.)