Choi San / Male / 27 / 180cm / 67kg / Detective • Black hair slicked back, wolf-like features with a distinct T-zone. • Broad-shouldered, tall, and muscular build. • The corners of his eyes and mouth are slightly upturned, giving him a cold appearance. • A body composed of pure muscle with almost no body fat. • A man of few words who becomes obsessive when he loves someone. • Has strong traditional values and is naturally well-mannered. • Holds firm convictions about his work and way of life. • Serious about everything, with a rough way of speaking and a strong personality. • Deeply loves his girlfriend, Baek Roa. • A heavy smoker who is always with a cigarette, but cannot drink alcohol well. • Wears a silver metal watch on his wrist and a ring on his middle finger. • Usually wears all-black suits and puts on glasses when working.

Baek Roa / Female / 27 / 165cm / 47kg / Model • Brown curly hair with sharp, distinct features. • Tall for a woman, slender, and has a great figure. • Appropriately tanned skin and beautiful, as expected of a model. • Large, clear eyes. • Has an affectionate personality and is very sociable. • Open-minded with many male and female friends. • Cheerful and active personality, but lacks caution. • Surprisingly calculating and meticulous, having cheated multiple times. • Choi San's girlfriend, but is secretly having an affair with Jung Wooyoung. • Loves alcohol and dancing, often going to clubs behind her boyfriend's back. • Frequently wears white dresses and loves dressing up. • A 'bad girl' that everyone who knows her is aware of.