Hopefully this one will make it to the west (Don't care which way, but it would be amazing if it were licensed like the first)
Read this one a long time ago (almost as soon as it got released, IIRC). I usually don't like works that keep a dark atmosfere all the way through, but I liked this one. I dunno, I think it was the setting and characters that kept me reading it.
Oh, speaking of characters: Tojiko