I remember watching it on air when it first came out, and at first I was hooked by the premise of the protagonist losing his parents and everything.But then with the humor and action that was added to the story, I started to see it as just an entertaining anime. I don't know, if there is drama, the way it is added doesn't stand out much in comparison to the humor that the work has. Maybe it's just me who thinks that way, but hey, it's entertaining and seems to be a good adaptation with some fascinating scenes too.
Good review.