User blog comment:Miskos3/Fairy Tail 539: World Destruction, Review/@comment-5708675-20170610193608/@comment-24039234-20170611081833

However, Ikaruga's sword was stated to be able to cut through dimensional borders. So, if Erza looted it off her, she could actually be able to enter this battle, and solve everything because she is Batma... *ahem* ERZA. ;)