Groper Train Search for the Black Pearl (2010)

The worlds largest black pearl has vanished without a trace and its up to Detective Ippei to track it down His only clue is the mysterious words of a dying man who managed to mutter Pussy Print before slipping away forever Teaming with the mans younger widow Matsuko Detective Ippei boards a local train and begins taking prints of the female passengers vulvas in hopes of matching one to the print that Matsukas husband had in his possession at the time of his death