Switch, Volume 4

The story follows Kai Eto, a seemingly innocent investigator for the Greater Kanto Narcotics Control Division, who conceals a dark and violent past. Alongside his stoic partner, he embarks on a mission to dismantle the distribution network of Dragon Speed, a perilous new drug threatening the community. As they delve deeper into the investigation, Kai's alter ego and tumultuous history may come into play, complicating their pursuit of justice.