The childhood sweetheart who once talked to her on the rooftop across the wall was put in danger because he left without saying goodbye.
With a sense of loneliness and anger, she worked hard to become stronger with the goal of defeating him. And in a place unknown to her, he used her as a source of comfort to hone himself.
Three years later, he parachuted into her high school, hoping to bridge the gap. However, their personalities had changed.
His superficial kindness and her indifference to everyone. How should she face her heart at her most beautiful age? And other people's expectations?
Concept: How can strong love achieve mutual growth, and how to explore one's own heart at the most beautiful age?