Keiji 7-nin 2015
Amagi Yu is a slightly eccentric detective who has been assigned to the Twelfth Section of the Tokyo Metropolitan Police Department’s First Investigative Division from the Lost and Found Centre. The Twelfth Section is called the “graveyard of detectives” and ridiculed as the “banishment room where hardened detectives who cannot be fired are sent”. Its assembled detectives Samura Kosuke, Yamashita Takumi, Nagasawa Keita, Mizutani Tamaki and Katagiri Masatoshi are elite and yet oddballs. Amagi appears fixated with time which seems to have no relation with a case. Raising questions about the timelines of the perpetrator and victim derived from the estimated time of death, time of crime, time of alibi and time limit, he searches for the meaning of “blank time” which arises from this. He obsesses over the weight of every minute and second of time because of some incident.
Season 1
2015
9 episodes
Season 1 of Keiji 7-nin premiered on July 15, 2015.
Season 2
2016
9 episodes
Season 2 of Keiji 7-nin premiered on July 13, 2016.
Called the “graveyard of detectives”, the Twelfth Section is ridiculed as the “banishment room where hardened detectives who cannot be fired are sent”. Amagi Yu’s (Higashiyama Noriyuki) transfer to the Tokyo Metropolitan Police Department’s mobile investigation unit; Katagiri Masatoshi’s (Yoshida Kotaro) promotion from former section chief to head the Criminal Affairs Division; Yamashita Takumi’s (Kataoka Ainosuke) move to the mysterious unit called the Future Crime Prediction Centre; and forensic science professor Domoto Juntaro’s (Kitaoji Kinya) appearance lead to changes in the environment.
Season 3
2017
10 episodes
Season 3 of Keiji 7-nin premiered on July 12, 2017.
Season 4
2018
10 episodes
Season 4 of Keiji 7-nin premiered on July 11, 2018.
Season 5
2019
10 episodes
Season 5 of Keiji 7-nin premiered on July 10, 2019.
Season 6
2020
9 episodes
Season 6 of Keiji 7-nin premiered on August 5, 2020.
Season 7
2021
9 episodes
Season 7 of Keiji 7-nin premiered on July 7, 2021.
Season 8
2022
10 episodes
Season 8 of Keiji 7-nin premiered on July 13, 2022.
Season 9
2023
9 episodes
Season 9 of Keiji 7-nin premiered on June 7, 2023.