This is a youth romance novel set on a high school campus. It revolves around the encounter, acquaintance and companionship between high school sophomore Lin Weiyan and transfer student Jiang Yizhou.
The story begins in the summer at Mingde Middle School. Lin Weiyan, a quiet and introverted academic, met Jiang Yizhou, who had just transferred to another school, for the first time in the classroom. The two became roommates and their interactions began with simple greetings. As they get along with each other on a daily basis - morning reading in the morning light, problem-solving discussions in class, holding an umbrella under the umbrella during heavy rain, studying side by side in the library, cheering at sports games, weekend track practice and appointments at art exhibitions, the distance between them gradually narrows.
Lin Weiyan's delicate sensitivity and Jiang Yizhou's calmness and gentleness formed a wonderful echo. Apart from intense studies, the two shared each other's interests, hobbies, life details, and future aspirations. From the initial unfamiliarity and restraint to the later natural familiarity, ignorant emotions quietly breed in the chalk dust in the classroom, in the sweat on the playground, and under the umbrella on rainy days, outlining a period of pure and beautiful youthful throbbing, showing the unique youthfulness, warmth and growth of high school.