User blog comment:FairyRaven/Fairy Tail Chapter 337: The Golden Plains, Review and Commentary/@comment-112.198.249.25-20130629134349/@comment-1359322-20130630063827

@Zero-J If you think about it your theory makes sense in lots of way. I wonder if Zirconis somehow broke free from F-Rogue's Dragon Manipulation spell when talking to Hisui cause he seemed to remember the nickname given to him.