User blog comment:IamJakuhoRaikoben/Chapter 402: Iron Fist of the Fire Dragon, Review./@comment-112.198.82.200-20140929162702/@comment-123.231.123.239-20141001164052

All 72????!!! That will take AGES. We don't have time for that. If Mashima wants to pull the Demon Pillars completely, he needs to do it in a spin-off or something. But I doubt it. Even in series that incorporate a huge fraction of the 72 pillars, they don't use all of them, at least, not at such a fast pace. Maybe in flashbacks but not in present continuity.