Shining Nara tells the story of a sixth grader named Nara who no longer wants to be a child. One day she finds a makeup kit and decides to use it. As a result, she became a 16 year old girl and disguises herself under the name Bitna to approach her brothers friend who’s training to be an idol only to end up training as an idol herself to be close to him. How will Nara be able to keep her true identity a secret?

본작의 주인공. 또래보다 작고 어려보이는 13살 소녀 '오나라'. 우연히 발견한 매직 메이크업 키트를 통해 어쩌다 변신! 꿈꿔왔던 로맨스가 펼쳐진다!