Switch, Volume 4

Can the Narcotics Control Division save the streets from drugs' invisible threat?

Kai Eto may look like a squeaky clean kid, but the Greater Kanto Narcotics Control Division's new investigator hides a violent alter ego and a dangerous past. With his stoic partner Hal Kurabayashi, Kai is assigned to track down and stop the distribution of Dragon Speed, a dangerous new drug. But Ryugen, the syndicate trafficking the drug, is almost impossible to infiltrate. Add street violence and a jurisdiction war with the Meguro Police, and poor Kai is in for some very long days at the office.`

The NCD is investigating a blackmail case involving a drug dealer who is proving impossible to pin down. In an effort to get a lead, the team begins to investigate the victim, office worker Yoshio Ito. Hal and Kai go undercover to infiltrate Ito's life, and find a twisted trail of dark secrets...