A terrible adaptation of one of my favourite manga series, but if you have read the manga before you are in for a fun time. The story is so confusing it's almost comical, so much material, both characterisation and central mystery, is glossed over, and it would be impossible to comprehend without the manga. Although, I would be lying if I said I didn't have a blast watching it.
If you haven't read the manga already, please do, it's excellent, please don't watch this trainwreck first.