This is actually incredibly well done.

It is also hard to break this into pieces and judge by separate category.

The manga starts as comedy, and over time starts getting serious. However, it is an amazing ride, and the way the story unfolds is quite gripping all the way till the final chapter.We have a hero, a demon lord, and then thing are not what they seem. Sadly it is hard to tell more without spoiling it.

The art is very well done, although the author is quite fascinated with certain mascot creature that keeps popping up in bonus panels.

Characters are a bit exaggerated for dramatic purposes, but within context of story they're believable and work well.

The story is quite gripping and entertaining and kept me interested till the last chapter.

Overall I'd highly recommend it. It is one of the few manga titles that I actually greatly enjoyed, meaning it is quite good.

So if you have the opportunity, check it out.