There's one chapter I've found out of the last 25 with 17 pages, but other than that every chapter I've checked has the standard eighteen pages. I'm pretty certain that if he really wanted to end Gantz, he wouldn't have taken a break after Kurono's death—it would have immediately moved into a mission/showdown and been "resolved", probably by the deaths of everyone concerned.
Originally Posted by ReiKGT
Anyway, I think he's putting in too much effort for that to be likely. The fact that he isn't punctual is just one factor.
Failure: when your best just isn't good enough.