User blog comment:IamJakuhoRaikoben/Chapter 355: Song of the Fairies, Review./@comment-8153438-20131010202144

Maybe the Tartarus members are relatives of the guild mages who are supposed to be dead long ago. Silver has a resemblance to Gray, Kyouka to Mirajane. What if there's Layla? XD

If Tartarus really have the book of Zeref, it will really shake-up the magic world..