In your youth, did you meet such a person? He may not be perfect, but he is a dazzling existence. Occasionally speaking to you in an ordinary way will make you nervous and incoherent, and make many ridiculous mistakes. Day after day, his presence even becomes a motivation for you to insist on going to school. All your rules and norms were instantly wiped out the moment you met him. His green smile in the wind represents most of his youth.