"Criminal 7", which started airing in 2015, is a TV series that centers on the new special task force of the Metropolitan Police Department Criminal Division, including Yuu Amagi, played by Higashiyama, and coexists with humanity and suspense. The ninth season will be a change from the previous season, where the relationship as a professional group made people feel trusting of each other, and the story will be full of an unstable atmosphere of mutual suspicion among the seven people. The members of the new task force have to face the death of people every day, and they are all worried about their future lives. Under such circumstances, murders occur one after another, and the victims are related to "a certain incident" 10 years ago. At the same time, the "revelation channel" of the police organization came from nowhere.