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.`

Kai's been working undercover as the assistant to the famous actor Shirai, who's a suspected Dragon Speed user. But Shirai isn't the average junkie, and his fame is being used as a covert advertisement for Dragon Speed, with sickening results. Will Kai's feelings of friendship for the actor get in the way of the investigation?