User blog comment:Miskos3/Fairy Tail 520: Dragon or Demon, Review/@comment-4933386-20170205092919/@comment-1776824-20170207133207

Put simply, the first question is that the seeds are the dragon slayer's. The dragons can't do anything to them except introduce antibodies. The rest of the questions are simply because it's Natsu we're talking about. Apparently any slayer can destroy them, but we all know only Natsu really can. And he only had to break them because of the demon seed. So really it's just an inconsistency. And confusing.