After watching this short movie it all made sense. This was the Japanese underground inspired by the success of directors like Takashi Miike. It's a one room setup that can be summarized in the following words; gore, sex and gore. Hope I didn't spoil it for anyone. It's Ichi the killer meets amateur porn. My guess is that it's an amateur production not meant to be viewed outside the living room of the people involved.
I wouldn't recommend it to anyone I know. The porn is uninspired and the gore is poorly made. An hour seeing something else is an hour well spent.