Oh Ri-jin is a fictional character from the South Korean television series Kill Me, Heal Me. She is portrayed as a bright and compassionate psychiatrist who becomes involved with her patient, Cha Do-hyun, a man suffering from dissociative identity disorder. Throughout the series, Oh Ri-jin helps Cha Do-hyun confront his multiple personalities, each with distinct traits and backgrounds. Her dedication and empathy play a crucial role in his healing journey, showcasing the importance of understanding and support in mental health treatment.