The female protagonist has a crush on the male protagonist from junior high school to college. The male protagonist is a very good person. Because the male protagonist is younger than the female protagonist, the female protagonist chooses to repeat her studies in the third year of junior high school. Then the male and female protagonists experience a lot of things together, and slowly turn from strangers into best friends. No one knows about the female protagonist's secret love, but everyone knows it.
Purpose: adapted from personal experience