It looks positively fascinating.. mostly because, from both the website and the review, I cannot tell exactly what the filmmakers stance on the subject of fascism is. The plot actually sound a lot like an old Sogo Ishii flick, "Crazy Thunder Road", which was about a bunch of bosozoku getting involved with right wingers and the yakuza. However, that film had a pretty clear anti-right wing message to it. Personally, I'm not too worried about fascism ever becoming mainstream "cool" in Japan.. since it actually requires a political stance of some sort, the Shibuya crowd would never buy into it.
I think the opening scene says it all . . . To gain an sense of the film's politics, you can see that ALL the HTML labels use rightest labels like the "National Line".... but wait, it's really the "International Jewish Conspiracy" with this Star of David logo for the film