Tokuso 9 Season 3

It has been nine months since the previous head of the Special Investigations Unit left. Asawa Naoki and the members of the unit no longer get requests for backup from the First Investigation Division but keep getting pulled into work, such as providing security. The influence of Mihara Tatsuro, the former head of the criminal investigations who held a grudge against the Special Investigations Unit and was ousted from the Tokyo Metropolitan Police Department, still remains in the organization…
(Source: jdramas.wordpress.com)