Claymore is a manga definitely worth reading. When I first began, it looked alright to me. Not too interesting but enough to make me continue the series. As it progresses, you'll notice the fights get bigger and more destructive (not to mention super awesome). From my viewpoint there, wasn't much character development; most of the characters stay the same. Though this doesn't have a huge impact on the story. The story is really interesting once you get farther, it surprised me entirely and had a twist I wasn't expecting. There's also the art, which is amazing. This entire series hasn't failed to amaze me norlose my interest. One of the few that I actually have kept up with despite the number of chapters. Give Claymore a read! You won't regret it.