The early stage is mainly about sweet campus life, and the later stage is about sour secret love.
Concept: Young people always feel that if they like someone, they will get a response. They will have low self-esteem, internal friction, repeatedly guess the other person's eyes, and struggle with whether or not to confess. The point of the story is not to go in both directions, but to the protagonist slowly letting go of his obsession: seeing clearly that the two people's life trajectories are inherently different, and accepting the ending of "I like you, but we will not be together". Understand that you don't have to force your heart to achieve results, and learning to live with regrets is the most important growth lesson for youth.