This anime is about martial arts and fist-fighting. Recommended for those who like awesome fight scenes with superhuman fighters and lots of violence (YuYu Hakusho and maybe Naruto comes to mind).
Aside the usual silly Japanese humor, the mood is dark and gets darker all through the series. The animation and the music are excellent, and the whole show is full of fan service. I would give it a 9 or even a 10 but there are two major problems with this anime:
It doesn't have any kind of ending. Even if you add the OVA Ultimate Fight to the original 24 episodes (thus making it 26), you get no ending whatsoever. It's not like everything is settled and just 1 tiny bit of the story remains for you to complete or imagine. It feels they wanted to make at least 50 eps but someone canceled the project right in the middle.
The second problem is the quantity of looks into the pasts of the characters. For the first 10 or so episodes the story is nice, clean and continuous. Then you get flashbacks 3-4 eps long and the main storyline is sinking away.
