User blog comment:FairyRaven/Fairy Tail Chapter 465: 400 Years, Review and Commentary/@comment-182.68.37.230-20151209114329/@comment-114.108.214.205-20151209150135

I think we/they're in a Catch 22 situation, cause if Zeref dies, Natsu dies as well, but if they don't die, than humanity will.