Tantei no Tantei

Tantei no Tantei summary:

The story centers on Minemori Kotoha, a woman who has been offered work at Suma Research Company "Anti-Detective Section," and Sasaki Rena, its only investigator. This section focuses on rooting out corrupt detectives and removing them from their positions.

While the two women spend their days investigating crooked cops, a new criminal is beginning to make his move...