Ikigami: The Ultimate Limit (vol. 2) by Motoro Mase, translated by John Werry, English adaptation by Kristina Blachere
I have volumes 3 and 4 of Ikigami already pre-ordered (although not coming soon enough, I might add) so that ought to tell you I'm clearly hooked on this series. I also wish they were longer, too, but that's a groupie talking ...