When a rational, top student in the Department of Finance knocks over the painting box of a girl from the Department of Art - the paint is scattered as a prelude to their encounter, and the trace of cobalt blue that cannot be washed away will become a code that runs through youth.
Lin Xingwan's world is composed of lines and colors. As a freshman in the art department, she is used to collecting everything in the world in a sketchbook, but she never thought that her youth would change the color due to an unexpected collision.
Gu Yu's life follows a strict formula. A financial genius and the bearer of family expectations, his future had been accurately planned since he was born—until that autumn morning when he knocked over her painting equipment while riding his bicycle, and his sleeves were stained with a trace of cobalt blue that could not be washed away.
Two worlds that were originally parallel began to have strange intersections:
His presence behind the art history bookshelf in the library reveals hidden talents in painting;
The talent she displayed in her stage lighting design sketches allowed him to see another possibility beyond rationality;
An unlucky agreement to "pretend to be a couple" binds the two into deeper temptation;
And hidden in the tube of cobalt blue paint as compensation was the back figure he secretly drew of her lowering her head to paint...
From the color temperature discussion in the library to the first invitation to the art museum;
From the spotlight of the orientation party to the crossroads of graduation decisions;
From the naive "Hello, classmate" to the clumsy "Draw better next time"——
This fate, which started out of an accident, slowly settled over the course of four years, and finally became the determination that "it has to be you".
