Police arrest rates have dropped significantly. In desperation rules atr btoken and a private detective is hired for undercover work: Toru Oribe, nickname Tokage (the Lizard), a genuis former cop whose leaving was one of the main reasons why arrest rates dropped. However his nickname has 2 meanings (1) a chameleon like ability to conceal himself yet be active (2) a lizard who sheds its tail to escape danger - his rumoured abandonment of a partner resulted in his leaving the police. (imdb)