It was a very good and light-hearted manga. The gag, which ran for over fifteen volumes, despite being overused, never got old, and was still very funny until the end. For me though, what was more funnier and enjoyable was the interaction of all the characters between each other, and how their chemistry mixed well with each other. The art, which was really, really bad at first, yet understandably so, as is the case for almost every other manga, got better and better until it got to the point where it was as good as Claymore's drawing. The characters felt more realistic, and you can clearly relate to their actions and emotions. If you actually went back and read the first chapter right after finishing the whole manga, you'll find the main character to be not scary at all, in comparison to his later image. And the ending... I think, was very satisfactory. Quite good, actually. The fact is, stories like this don't actually need any closure. Life goes on for this people these people, and situations such as those already presented will never cease happening. I really found inspiration from Yagi's final notes, how we shouldn't look at the manga as a manga called Angel Densetsu, but rather look into a world where there are silly people doing silly things. Probably another important aspect of this manga is its moral lesson, how you shouldn't judge a book by its cover, but in a more broader sense of view.
Anyway, this manga is indeed a very good read, and I highly recommend it to everyone.