An in September

A story about childhood friends who couldn't stand each other, but got together after growing up.

A short story with a love rival who arrives out of nowhere, but in the end, the childhood friend wins.

A tsundere, top-of-her-class girl and her childhood-friend boyfriend.

In a corner of the school building's rooftop, someone has written: "Lin An and Zhang Jiuyue, together forever."

Theme: Study hard and keep improving every day