I have all the english volumes. It's been awhile since I read it, but I'll do my best in telling you about it. They stopped volumes right after a story arch. The main story of course still was to go on. The art in this series isn't your typical manga style, but it is strangely fitting for the subject matter. The art reminds me of the older horror manga I have been reading. It is very gory and disturbing at times. It also is a very interesting premise. If you like your horror manga bleak, full of despair, and not knowing who is going to get it next, then this is a good series. Dark Horse seems to be translating some of the older horror series that no one else will touch.

I went ahead and ordered the six available volumes, taking advantage of the "Dark Horse 33% Off" sale.

It's an addictive read. I think you'll like it.
I just wish Dark Hourse would have finished the series.