Skimming through most of the comments, it looks like a love or hate situation here. And I have to agree. WGWC is very much a series you either end up liking or end up hating. Of course most people do hold a middle ground and just don't care for it, however one fatal flaw that people seem to possess over this manga is the inability to realize it's only been scanlated to chapter 26.
Chapter 26 is nothing. It's a very small number in the lieu of manga chapters of many other series. Who knows? It may get more complex, things might happen after a chapter hits a certain mark. (For example, Katekyo Hitman Reborn didn't gain any real footing in actual plot till about 50-70 chapters) We don't know that. But for what it's worth and as far as they've gotten... I'd say WGWC has delivered to me. The art style, I really like. It's boldness and texture is something I generally don't read and it felt refreshing for someone like me.
Sure, the story isn't original. But what story is nowadays? Everything is almost a retelling of something. It's very hard to be completely original in these days. It is a futile fight. As for maturity level? I think the "seinen" label is mainly due to the graphic violence and nudity. Cause let's face it, this is too graphic to be considered as "shounen" as series like Bleach or Naruto. I don't think mothers would want their children reading about a teacher getting raped.
As for the werewolf situation. I do agree that nothing can really beat Wolf's Rain. But I find the way Yugo/Tabata are handling it isn't bad. In fact, I kind of like it. It looks like a typical werewolf and we don't see many manga about werewolves. And most werewolf stuff outside of anime/manga is romance. Granted, I think romance may become a side element to this story (who doesn't feel the chemistry brewing between Ingami and Aoshika?[which gets an A+ for me, as I adore teacher/student stories as well]), but it's nice to see more werewolf stuff that isn't purple prose, Hollywood horror, or pre-teen novel drivel.
Character wise, yeah, it's lacking. But I personally have really enjoyed Akira's proud personality and the way Ms.Aoshika carries herself. I find myself interesting in how things will pan out for everyone and how the gangs will finally fall (which I'm sure will happen).
All in all, this manga can be enjoyed by anyone who gives it a chance. But don't be surprised for a disappointment if you're going in to it with the mindset of having something that will compliment Berserk or set your brain ablaze like Monster.