The case records of the Shinjuku Police Station portray a raw and brutal depiction of the depths to which humanity can sink, depicting the chilling atrocities of daily life and those who perpetrate them. In this society, child abuse can give rise to profoundly disturbed individuals, and those who have been wronged often resort to violent retribution. It can be challenging to recognize the difference between those who have committed crimes and those who have been victimized, and even the most depraved members of society can be marginalized. Now, after years of stasis, Ida Kyouya, a former detective, is motivated to return to his post and reclaim his firearm.