Do Hana, portrayed by Shin Ye-eun in the web series "A-TEEN," is a high school student who is depicted as being morally upright, popular, and a good friend. She is often seen as a "Mary Sue" character, meaning she is idealized to the point of having no significant flaws. Throughout the series, Do Hana is involved in typical high school experiences, including navigating friendships, academic pressures, and romantic interests. Her character is central to the narrative, and she is described as someone pretty, popular, and never does anything wrong, which contributes to her portrayal as an almost perfect character. Despite some viewers finding her character to lack depth, she plays a significant role in the series and contributes to its themes of growth and self-discovery.