User blog comment:FairyRaven/Fairy Tail Chapter 407: All for My Demise, Review and Commentary/@comment-86.66.207.111-20141103171446

I found something about the Tartarus arc, which was written in the 39th volume, here the link : http://forums.mangafox.me/threads/508518-Tartarus-arc-entire-story-of-Faiy-Tail-will-change-in-a-big-way-big-mystery-solved