Lin Shixu, the "little gangster" in the class, and Lu Xing'an, who had been bullied on campus
At first, Lu Xingan was wary of people around him because of his character flaws, and was afraid of being bullied by others.
Lin Shixu appears to be a gangster, but in fact he is gentle and kind-hearted and is very tolerant of Lu Xingan.
The two help each other
The "coward" attacks x the cheerful "gangster" receives
Purpose: campus life, youth growth