Code:Breaker is a "dark hero" manga which has an anime adaptation coming in the fall. I decided to check out the first couple of volumes of it and it is pretty decent. Some nice action, very attractive heroine, a bit of fan service, some humor (Mii-tan and Hii-tan... LOL!) and a fairly decent plot, with the heroine trying to stop the amoral mass executioner of a MC from doing his thing and finding out more about the nature of evil in every chapter.
Here is the first trailer, which is only 22 seconds:
http://www.youtube.com/v/gcqBr0ogREQ?version=3&hl=en_USThe longer 1:14 PV is not available on YouTube yet, but they posted it on the official site. (Which is region blocked, but
ANN streamed it on their site.)
It looks like it could be good, or it could be just another overpowered shounen action show with a bit of Mii-tan and Hii-tan fondling tossed in for good measure...