User blog comment:FairyRaven/Fairy Tail Chapter 325: Unity, Review and Commentary/@comment-49.176.34.54-20130330054337/@comment-49.176.1.224-20130331031419

the 80+ Barrier occurred during the Fighting Festival Arc, Natsu, Gajeel and Makarov was stuck inside the building due to Freed. The Rule was people older than 80 will not be able to past the barrier. and Natsu and Gajeel couldn't get out of it...