After the protagonist retired, the heroine quit

Due to a mistake, the male protagonist of the novel was born 13 years later than expected.
In order to prevent the world from collapsing, for love and justice, Xiao Yu, a professional scapegoat who traveled through time and was familiar with the plot of the novel, had to temporarily take the blame for the protagonist and go through the story.
After working diligently for 13 years, he learned that his career as a scapegoat was over and he no longer had to pretend to be the protagonist.
Xiao Yu immediately put the...