User blog comment:IamJakuhoRaikoben/Chapter 451: Fairy Heart, Review./@comment-24367018-20150907170022

Might just be making mountains out of mole hills here, but has Natsu's laugh always been so distinctive like; 'Nihihihi'? If not, could that be a subconscious rise of END for when talking about toppling Zeref? Personally I'm not totally convinced