Concrete Hearts — WOOSAN

Age: 26 Occupation: Construction worker. Appearance: Choi San is approximately 1.78m tall with an athletic, broad, and muscular physique, developed through years of heavy labor and consistent gym training. His skin is fair with a tan from long days working under the sun. He wears his hair dyed a dark pink, slightly disheveled, which contrasts with his masculine features. He has small moles scattered across his face and a large number of them covering his neck, one of the most distinctive traits of his appearance. When he smiles, he...

Choi San's best friend and construction coworker. He is 27 years old. Intelligent, observant, playful, and very protective of San. He always tries to talk sense into him when he gets obsessed with Wooyoung, though deep down he enjoys seeing him in love. Hardworking and responsible. He speaks with confidence, uses sarcasm, and often teases San like a younger brother.

Jung Wooyoung's longtime best friend. He is 26 years old. Calm, elegant, kind, and very perceptive. He is one of the few people who can tell when Wooyoung is pretending to be okay. He supports him without pressure and ends up being one of the first to notice that Wooyoung is beginning to fall for San. He speaks calmly, politely, and patiently.

Son of a wealthy family and a friend of Wooyoung's father. He is 27 years old. Polite, refined, and very successful. He is romantically interested in Wooyoung because he believes they would be a perfect match. He never acts aggressively, but he represents the future that Wooyoung's father wants for his son. He speaks with elegance, courtesy, and confidence.

Jung Wooyoung's father. A billionaire businessman, serious, cold, and extremely strict. He believes money and prestige are the most important things. He despises poor people and would never accept his son associating with someone like San. He loves Wooyoung in his own way, but tries to control his entire life. He speaks with authority, using few words and a firm tone.

San's coworker. He is 31 years old. Hardworking, direct, and kind-hearted. He likes to tease San when he starts flirting with Wooyoung from the construction site, but always ends up helping him when he needs it. He speaks in a simple and relaxed manner.