Answer
Itaewon Class was Ahn Bo-hyun's turning point in his career. He had previously appeared in small roles in dramas such as "Descendants of the Sun" and "School 2017", but it was his role as Park Sae-royi in Itaewon Class that brought him widespread recognition and popularity. In this drama, he played a young man who is determined to succeed in life despite the challenges he faces.