User blog comment:IamJakuhoRaikoben/Chapter 446: The Land Abandoned By God, Review./@comment-3441749-20150727143012

From the looks of things, its almost as if the whole group will be going to fight Azeal.

It is said multiple times that E.N.D. is sealed within his book, so I don't think Natsu's bandages have much to do with that. Chances are it has more to do with his Dragon slayer magic.