I've read all of the first volume and a bit of the first, and this manga is really great stuff. The last volume is out around the end of August. highly recommend it.
(http://ecx.images-amazon.com/images/I/61IwLs10WaL._SL500_AA240_.jpg)(http://ecx.images-amazon.com/images/I/516WKZA5pdL._SL500_AA240_.jpg)(http://ecx.images-amazon.com/images/I/61k9dlH8M5L._SL500_AA240_.jpg)