Keigo Higashino's " White Night Walk " was a mystery novel about the complicated relationship between two teenagers and the story of them solving mysteries together. The protagonist of the story was an ordinary family called the Takahashi family, which included two boys, Genji and Koichi. The two children experienced many conflicts and difficulties in their growth, but their relationship with each other was still very close. In the story, there was a complicated relationship between Genji and Kwangichi's mother, which also involved a mysterious woman called " White Night." Shiroya was a mysterious person who seemed to have a deep influence on the Takahashi family and also had an impact on the relationship between the two children. In the story, Genji and Kazuichi had to work together to solve a series of mysteries and problems in order to reveal Shiroya's true identity and resolve their relationship. The whole story was full of suspense and tension, making it difficult for the readers to predict the future development. " White Night Journey " was an excellent mystery novel. Not only did it have an excellent plot and character creation, but it also deeply explored the growth of teenagers, family relationships, and the complexity of human nature.