On a campus where cherry blossoms are in full bloom, two completely different teenagers meet unexpectedly.
Lin Jianyu, a mathematical genius, ranked first in grade, but due to childhood trauma, he closed himself in a world of formulas and theorems. Jiang Gucheng, Sunshine Sports student and basketball captain, used his smile to cover up the pain caused by his father's early death.
An accident in the library knocked over the bookshelf and opened the door to two worlds. From the notes scattered when we first met in the library, to the lunch shared on the rooftop; from a star umbrella held together in the rain, to the tacit glances at each other on the basketball court; from the starlight on the eve of the math competition, to the agreement to part ways after graduation...
In this season called youth, they heal each other and achieve each other. Lin Jianyu learned to feel the temperature of the world outside of formulas, and Jiang Gucheng found a life direction other than basketball.
When the graduation bell rang and the choice of the future was before them, they made a promise with a ring engraved with the symbol ∞: No matter how far apart they are, they will become better versions of themselves under each other's starry sky.
Purpose: Become a better version of yourself
