tl;dr: A series with a random plot, a weak main cast, terrible villains, but really good art. 

I will preface this by saying that although I get that this is supposed to be a throwback to classic shounen in the 80s and 90s, I haven’t really read many manga like this, so the nostalgia factor isn’t really doing anything for me. From that point of view, I found this to be a mess. There are interesting concepts to the world, but the story is really haphazard in that it’s not clear what direction the story is going in at all or what they’re really trying to do. Rather the plot is that they’re just wandering around randomly and stuff happens. If it was a strong cast of characters, that could probably hold the series up, but unfortunately that isn’t the case here and the main cast is pretty flat and isn’t really all that likable. What’s worse is how the manga handles villains, wherein one of the villains that’s shown as being comical levels of awful in that he rapes the main characters friends to death, goes on without any major punishment or redemption to become a character that’s portrayed as one worthy of respect as a rival to the main character. Furthermore, the manga pretty much constantly fawns on this villain, with for some reason all the girls being in love with him and him never losing a battle. I’m not opposed to comically evil villains, but you can’t have a comically evil villain and then try to make them seem awesome. That’s just dumb. The story doesn’t end in a cliffhanger exactly, it didn’t really feel like there was enough plot to really do a cliffhanger, it just sort of ends without anything resolved yet. There’s a sequel series, but this is still a pretty weak way to end part 1. The humor was pretty hit and miss. The action was decent. The art at least is really good.