Qu Yuxi caught a glimpse of Lin Xuran, a sophomore in high school, during running exercises in the spring of her first year of high school. The boy looked like a silhouette in the sun, and it became the most persistent secret of her youth. She records the taste of soy milk he likes to drink, memorizes his class schedule to create chance encounters, and fills her diary with her thoughts that no one knows about. Before graduating from her senior year of high school, Lin Xuran handed her a note: "I know you like me, but I'm sorry, I can't respond to you."
In seven years, Qu Yuxi watched him being admitted to a prestigious school, falling in love, and getting married, but she was still trapped in the heartbeat under the cherry blossom tree that year. Until one night when she was working overtime late at night, she discovered that her colleague Cheng Yu's drawer neatly contained all the articles she had published - it turned out that during the seven years she was chasing others, someone had also been watching her quietly like this.
Purpose: Secret love is a grand self-reconciliation in youth, and true growth is learning to turn obsession into the courage to move forward.