The theme of "season 7" is diversity. The members of the Special Investigation Unit, including the team leader Kunikida Seiji, Asawa Naoki, Komiyama Shiho, Aoyagi Yasushi, Yazawa Hideaki, Shindo Ryo, and Takao Yuma all have strong personalities. However, their ages, careers, personal circumstances, investigative viewpoints, and approaches to their work are all very different. Therefore, clashes occur on a daily basis, but based on the trust they have built up over the years, they are a team that can honestly admit their differences in opinion and work together. On the other hand, the crimes they face are also becoming more diverse with the times. In the new season, they will depict not only cases that reflect the "current" world, but also various human dramas lurking in the background and the detectives who face them with all their might, in a complete episode format. (Source: Japanese = TV Asahi)