User blog comment:Bato of the Heavy Iron Rock Hammer/God Serena theories/@comment-24784846-20150731212931/@comment-7418318-20150731220947

But wouldn't that make him kind of naive?

I mean trusting Zeref, the who's known as the "most evil wizard of all times" and a monster to save the world from the other immortal monster?

Maybe if he had some plan to deal with Zeref once Acnologia is taken care of... but if he just took Zeref by his word I'll be majorly disappointed.