This is one of my favorite manga/light novels I've read.
It has a good story, the end is a little too cheesy for me but before that it's incredibly interesting and amusing at the same time.
The art is great if it's your style, this isn't really my favorite style of art, but it's still very good.
Character dev. is done rather well. The line is usually rather simple to read, but sometimes the amusing parts kinda get mixed and you have to re-read the few pages (or in the light novel's case, a chapter).
I thoroughly enjoyed this, it is one of the
few that have caught my attention for more than a few months.
If you're into this genre, it's a good one. Of course, I'd recommend you read the light novel first rather than read the manga. It's long, but worth it. Trust me.