Xia Shu broke up with her high school boyfriend because of a long distance. She was too arrogant and unwilling to take the initiative to reconcile. She cried herself to sleep on the high-speed train. When she woke up, she found that she was back in high school and everything could start again.
Natsuki: "How can you love me again?"
Shen Xi: "You should do less."
Intention: Go back to three years ago and love you again