OPM follows the life of an average hero who manages to win all of his battles with only one punch! This ends up being the cause of a lot of frustration as he no longer feels the thrill and adrenaline of fighting a tough battle.
Maybe all of the hard training to become strong wasn't worth it. After all what's so good about having an arrow to the knee?
This Manga is really great. I read all 22 chapters yesterday :p (it is still on-going)
It doesn't take itself too seriously, but the art-work is pretty nice and the story ends up being pretty great. Be sure to give this one a try, u'll be in for a nice surprise.