User blog comment:IamJakuhoRaikoben/Chapter 405: Tartarus Arc: Part 6 - Magna Carta, Review./@comment-24622358-20141022001341/@comment-31.61.140.2-20141022190202

Yup, all valid points. Still, the Tenrou Jade is the first thing coming to mind (aside from Annie Leonhart ;)) that can be associated with words 'girl' and 'crystal'. Other than that, what do we have in FT? Wendy with Lacrima is really weak interpretation of this title. Kyouka is not a girl, nor is Face interface a crystal. Can Erza without her senses be considered as locked in unchanging environment, as in crystal? It could be such a metaphor, but I doubt we will jump back to Erza after one chapter 20 minutes earlier. Gray could technically put someone in ice crystal, but who and what for? The Jade seems more plausible to me than all of that. But of course it might be something totally new, too.