You won't see too many movies like this one. In fact, it's so unusual in places that a good brief description is hard. Think Tarantino does Surrealism and you'd be on the right track, at least. As such, it's understandable that this never had a theatrical release, but don't let that dissuade you. This is better than most of what makes it to the big screen... it's just not commercially viable.
Having said that, there are places where it's easy to get lost in this movie, especially toward the rather gory conclusion. There are also quite a few bits that a lot of people are bound to find offensive. There's incest, sex in a public place with a priest, homosexuality, and a couple of what can only be termed severely botched circumcisions. There's also a whole lot of red meat from end to end. You'll certainly never look at steak the same way.
Still, if you like Tarantino's recent stuff, you'll probably like this movie, too. Considering that this is only the second effort from director Gregory Hatanaka, it's a very good sign. I hope to see more of what he can do.