"Ikebukuro West Exit Park" is adapted from Ishida Ira's mystery novel of the same name, written by Miyato Kankuro and directed by Tsutsumi Yukihiko. The film mainly tells the story of a group of teenagers who often stop at Ikebukuro West Exit Park. This group of teenagers are idle Taibao in Ikebukuro Park. They often chat up high school girls passing by. If they get along well, they go to sing and party together. If they see someone they don't like, they will attack in groups. In the eyes of the police and outsiders, they are complete bad boys and social scum. But this group of teenagers also has their own standards of good and evil and loyalty and friendship to each other. Representative of the villain: Ando Takashi (played by Kubozuka Yosuke) As the leader of GBoys, he gives himself the task of protecting the safety of Ikebukuro Park and preventing the intervention of other emerging gangs. If there is any disturbance, all members will gather and will never stop until they fight to the death. Representative of the decent: Makoto Makoto (Tomoya Nagase) spends his days hanging out in his beloved Ikebukuro Park, but he feels that he can protect his family without joining a gang. The murder of his friend is the trigger for him to start looking for the murderer. His meticulous reasoning wisdom makes him a Zhuge Liang between the police and the underworld. He values friendship and often stands up for his friends. Parents and children, police and teenagers, can everyone find the answers they want?