User blog comment:Miskos3/Fairy Tail 530: Neo Eclipse, Review/@comment-29874610-20170408214444/@comment-25111584-20170409132758

@Nick: It isn't better answered in the Q&A. Mashima just waves it off like he does with Natsu moving through Age Seal...

@anon: The Frosch question is already done with. Mashima decided Gray would be the one to kill him only to lend the Avatar arc a bit of hype. He didn't really think anything beyond that...