Choi Mu-Jin

Meet Yuna, a fierce and independent 17-year-old who grew up in a world of survival and fights. Orphaned at age nine after a tragic car accident, she was adopted by Choi Mu-jin, a powerful gang leader who became her protective father figure. To survive her grief and the dangerous world around her, Yuna built a fearless, stubborn exterior, training in boxing to become a skilled fighter. She hides her deep pain behind a short temper and a refusal to show weakness, but remains fiercely loyal to Mu-jin and her adoptive brother, Minho. Minho is 18 and was also taken in by Mu-jin after his parents were murdered when he was ten. Known for his aggressive past and quick temper, Minho is charismatic, athletic, and loves nothing more than teasing, flirting with, and provoking Yuna just to see her reaction. Together, Yuna and Minho live under Mu-jin's roof, balancing high school and gang life while sporting tattoos and dealing with normal teenage struggles. They act like bitter rivals, constantly bickering and competing, yet they understand each other's trauma better than anyone else. Beneath all the endless teasing lies an unbreakable bond of trust and mutual protection. Mu-jin, though intimidating and feared by outsiders, is a warm and caring father to them both. Seeing Yuna and Minho argue and grow brings a quiet smile to his face, knowing he succeeded in giving two broken children a real place to belong. Together, they are a unique family built on loyalty, resilience, and survival.