It tells the story of a boy who slowly grew up and became a teenager after experiencing the sophistication of the world, and the girl he met when he was a student, so that he could not forget it all his life, and it became a lifelong regret. You only have one youth, so don't let yourself not live a wonderful life. Some people say that a life without regrets is an incomplete life, but the author still hopes not to leave any regrets.
This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.