Gozu (2003)

Plots: A yakuza enforcer is ordered to secretly drive his beloved colleague to be assassinated. But when the colleague unceremoniously disappears en route, the trip that follows is a twisted, surreal and horrifying experience. Minami, a junior member of a Japanese underworld organisation, is sent on a road trip with a senior colleague, Ozaki. Ozaki is to be bumped off, as he is now a liability to the organisation. On the way Ozaki disappears under mysterious circumstances.