This is a series that started off pretty strongly, with an intriguing anti-hero protagonist. However, somewhere in the middle it became too draggy with all those tedious flashbacks and an abrupt switch in focus to the relatively boring backstory of the main character and his quest to defeat his archenemy. It didn't help that said archenemy had a less than compelling presence and personality. IMO, It would have been better if the author finished this series in 10 volumes, then put the revenge arc into a new series or spin-off.

The art is above average, but not really to my taste. The main characters are drawn well, but many of the background and supporting characters do not appeal to me.

Story/Setting: B+
Drawing/Design: B+
Characterisation: B+
Bonus/Bias: +10% (for having a somewhat different feel from the average Japanese shonen manga.)