Just finished reading Fire Punch. I had actually put it down after finding the first volume kinda stupid, but ended up hooked back in when I was waiting in my car recently and my 20-minute app limits on Reddit and YouTube had been used up.
It remained kinda stupid. Really stupid, actually, but it stayed interesting enough. Watching the characters repeat the evils of those they sought revenge on was well done, if a little shallow. A lot of it smelled of how-fucked-up-can-we-get-away-with with the charred corpses and burning children, but at the same time the whole thing felt weirdly nostalgic -- it had that hyper-violent pseudo-philosophical-but-not-actually-saying-much mouthfeel to it that reminded me of the old JRPG / manga auteurs that crafted the messed up borderline-incoherent stories of my youth.
It was a very different quick read, and stupid isn't necessarily a bad thing every now and then. Stupid can be fun.