User blog comment:FairyRaven/Fairy Tail Chapter 414: Drops of Fire, Review and Commentary/@comment-4489126-20150105180942/@comment-7418318-20150105194516

Looking at the MS translation, it really seems like MP fucked up.

On MS Gray says "You Bastard! That's one of the Demons you yourself made!", so it does seem to be outrage that Zeref killed his "child".