A smart female academic domineering × a handsome male academic scumbag. During the summer vacation after graduating from high school, Gong Xizhao left his hometown alone to work. On a speeding train, he met the strong and intelligent female academic Guo Yizhen. At that time, he never expected that he would make the decision to repeat his studies for her in just one day, nor did he expect that this girl who was obviously younger than him would become his tutor for the next year. The setting sun is slanting and twilight is approaching. With you by my side, it's never too late.