You Are the Trace of My Youth That Cannot Be Erased

He and she were two intersecting straight lines that converged into a point at a certain moment, and then moved forward in their own directions. The angle of the straight lines remained unchanged, but the two of them were getting farther and farther apart, so far away that they couldn't even see each other's shadow. She met him in the first grade of junior high school, and she and he were at the same table. In the second grade of junior high school, we were still at the same table. She disliked his bad breath, but she didn't realize that her own mouth was also very bad. In the third year of junior high school, he was no longer her deskmate, and she suddenly felt empty...