I''m a large fan of good Anime , preferring the more 'adult' themed titles in general (NOT pornographic or fetish) and while this Anime did have an adult oriented theme running through it, it was mostly child based characters. This wasn't what detracted from the film though, it was the plot of a serial killer hunting girls that didn't have ANY cohesion to it whatsoever, a misleading title that means 'werewolf' in french but has nothing of the sort in the film and the most tenuous of connections to a 'lone wolf' that I've ever seen and characters that were boring bordering on inane. For example: the main 'boy' character's main feature was no character whatsoever... he was akin to an emotionless robot and the main 'girl' character... well she was annoying on multiple levels with he inability to communicate.. not that she couldn't, she has some kind of 'disorder' but the fact that over half of her utterances are just sighs, moans, 'ooohs' and 'ahhs' to the point that it almost seems like audio porn. Irritating and disgusting considering it's a 12 year old.
All in all, the story refused to explain itself throughout and ended with such an anti-climax I wanted to smash the screen in rage. Just because it's an adult oriented Anime with mature themes and pretty artwork does NOT make it any more palatable than an episode of Teletubbies!
Stay away from this one and save yourself an hour and a half of your time.