User blog comment:IamJakuhoRaikoben/Chapter 334: Sin and Sacrifice, Review./@comment-69.121.99.96-20130614014251/@comment-1359322-20130614015518

In a sense, i guess killing Gray off would be a huge "surprise" to the fans who thought that main characters can't die.

Natsu can like kill him in one attack using his Lightning Flame Dragon's Roar, Erza will just one-shot him like usual.