In the bright lights of the city, a very ordinary person spends his life in an ordinary way. Thinking about his past life, he finds that he always lacks something called "courage". This thing allows countless people to live an ordinary and busy life, and also allows some people to live a wonderful and regretless life.
Perhaps it is God's compensation. An ordinary man who is "excellent by being himself" will bring about changes in himself and the world after returning to high school.
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.