Shin remains polarizing: it's definitely a movie you either really love or really hate. I'm a huge fan of it, I've always thought it's gotten a bum rap. It's a pretty cool, gritty update of the classic Rider story.
The main flaw is that the movie takes a bit of time to pick up, and the subplots might be hard to sort out at first. Otherwise, it would help for people get over that he doesn't say henshin or pose or saying that he "isn't really a Rider" to properly judge the material, fairly, on its own. Realize how true it stays to Ishinomori's creation, while taking a completely different approach than any Rider before it.
It was the 20th anniversary entry for Rider, so they modernize the old story. Nazi villains, surgically making armies of mutants to rule the world is out. In its place: corrupt officials backed by a crime syndicate to create genetically altered soldiers to sell to the military. While the original Kamen Rider, Takeshi Hongo, was taken against his will, here the protagonist volunteers for the surgery, being told it's for the sake of finding solutions to the world's incurable diseases. The villains are mostly all human characters, although there's an android and a murderous monster -- which just may or may not be Shin -- on the loose.
The movie is finally being released to DVD by Toei this week. It was a drastic change and ahead of its time, so it wasn't well received, leading Toei to pretty much bury it away (there's not one mention of its release on Toei's pages). I think it's a much better movie than ZO or J, which were dull stories wrapped in pleasant visuals. And as far as I'm concerned, Shin opened the door for New-Gen Rider.
Check it out. If you can sit through something like Paradise Lost or Missing Ace, why not a movie that's better than both of them?
. As for the movie itself, it's definitely for adults but is in no way disturbing or super violent. It has it's share of blood and gore but is less gory when compared to THE NEXT. As for the story, It was ok nothing special. You'll probably forget it by the end of the movie. 
