The ultimate Nature Trek

I read the first six volumes of "Battle Royale" in one sitting. I absolutely plowed through them after the first, mainly because I thought there only were six. Imagine my surprise when the story didn't end. I was a little worse for wear afterward -- while I knew what it was about, I wasn't at all prepared for it to be executed (ahem) so well. ( The story, for those who haven't heard of it. )

And now I understand there's a movie. (Okay, I'm a little late to this party. Forgive me.) Now it's just a matter of tracking down the English version and bending my mind out of shape again.