Ji Ran was cleaning up the high school classroom and found the notebook left by Lin Yu'an. There was a ginkgo leaf pressed on the back cover, and his name was written on the back. This discovery reveals the secret of an unspoken love between the two.
Ji Ran recovered the notebook that was blown away by the wind on a rainy day, and confronted Lin Yuan on the rooftop. The two confessed their feelings in the rain, but they had differences due to family pressure and future plans.
Ji Ran broke Lin Yuan's pen at the beginning of his senior year of high school and used his part-time money to buy a new pen, which showed the economic gap between the two. Behind Lin Yuan's deliberate distance was his father's stern warning...
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Concept: "Unfinished love is the most perfect specimen. Reality has rust spots on the surface of youth, and we spend the entire rainy season sealing a certain moment into amber."