I read the manga after watching this show. The fight scenes were very realistic and so were the FX (bruises and knuckle damage, blood, etc.). The acting was awesome and believable. I've rewatched the fight scenes a few times! Good story, great production, appropriate music, well done all around.

There was a touch of female interaction, which could've been left out or should've had a little more. I hated the ending, because it felt like they were going to give us more seasons and yet we got nothing. For these two reasons it only gets an 8/10.

If you like fight scenes it's worth the rewatch!