Lin Chen, an aloof academic at Mingde University, lives a life full of codes and regards love as a "redundant variable". Until Su Qingyi, a flower student from the art department, sat through class with a drawing board, memorizing formulas for drawing little monsters, giving him sketches of silhouettes, and holding a sunflower umbrella together on rainy days. In the library's lemon candy and ink fragrance, code meets oil painting, his "logical system" is stuck, and "redundant variables" become the sweetest exception, starting a sweet campus love.
