Keigo Higashino's " After School " was a mystery novel. The last paragraph meant that the protagonist Keigo left the school after school, but the suspense was not over. His departure made things more complicated and his friends and colleagues began to realize that they might have been involved in a dangerous game. In the next few hours, Keigo experienced a long and uneasy rest. During this time, he could not leave the scene or think about anything. This time of rest meant that Keigo needed some time to calm down so that he could make a wise decision to solve this mystery. In the end, Keigo decided to leave and seek professional help to solve this complicated puzzle.