Kurutta kajitsu

A working class guy/part time criminal falls for a cute girl who turns out to be a spoiled rich brat. Part of Nikkatsu's Roman Porno series of pink films, the plot of this is ridiculous but is of little consequence. There's a bunch of hot girls and kinky sex scenes every few minutes to distract you from the silliness of the story. The main chick is borderline psychopathic, and all of the bloody conflict that eventually arises from her affair with the guy is 100% her fault. Bitches be crazy.

Surprisingly raw and griping. The acting is good and the story is gritty but believable. The movie is basically a gut punch and doesn't shy away from the ugly natures of its characters.