Chae Song Hwa is a highly skilled and respected neurosurgeon at Yulje Medical Center. Known for her professionalism, intelligence, and dedication to her work, she is a key figure among the group of doctors featured in the series.

She is also characterized by her warm and caring personality, especially toward her friends and colleagues. Despite her strong and composed exterior, she is often seen displaying a gentle and empathetic side. She is also the only female member of the main doctor group, which consists of four close friends who share a deep bond from medical school.

Throughout the series, Chae Song Hwa is depicted as someone who balances her demanding career with her personal life, often dealing with the challenges of love, friendship, and work with grace. Her character is well-loved for being both relatable and inspiring, showcasing the complexities of a successful woman in a high-pressure field.