User blog comment:IamJakuhoRaikoben/Chapter 383: Surfer Lucy, Review./@comment-24066070-20140510064925/@comment-7418318-20140510074438

Maybe Alegria wasn't affecting the whole interiour of Cube/Plutogrim, but only the places where Fairy Tail Mages were, thus sucking in only those small-fries that happened to be close to the Humans.