Kim Jung-ah (김정아) is a South Korean actress whose career has largely taken shape within university film projects and independent productions. Prior to appearing in Am I the Only One With Butterflies?, she starred in several academic short films, including I Have to Study Abroad Right Now! (지금 당장 유학을 가야해!) —produced at the Korea National University of Arts— where she played a leading role as a high‑school student. She also appeared as the protagonist in Jealousy (시기), a short film from Sungshin Women’s University, and in the student web drama In the Name of Friendship (친구라는 이름으로 ), produced by Korea University’s broadcasting station. Her role in Am I the Only One With Butterflies? is her most visible work within the independent web‑drama scene.