Investigation Division 1

The First Investigation Division of the Metropolitan Police Department, which is based in the Dai-Tokyo Police Station , is headed by Keiichiro Funakoshi, the Chief of the First Investigation Division . This is a department that specializes in considerations that lead to solutions. Along with Ryu Fujii , a new detective who was newly assigned for some reason , they lead to the solution of many difficult cases one after another while colliding with each other's strengths.

• SmithDirector
• Takahiro AoyamaDirector
• Hiroto TotsukaDirector
• Yasushi AkimotoScreenplay
• Takehiro YashiroWriter
• Takeshi TakemuraWriter

• Eiichiro FunakoshiFunakoshi Keiichiro
• Momiji YamamuraYamamura Kaede
• Masahiko NishimuraNishimura Masao
• Reiko TakashimaTakashima Seiko
• Yūko NatoriNatori Yu
• Takashi NaitoNaito Masashi
• Ryusei FujiiFujii Ryu
• Eri TokunagaTokunaga Rie
• Shingo YanagisawaYanagizawa Shinzo
• Hinako KitanoKitano Minako